A total of 431 results found. Show Results on Map.
Rank | Median Household Income ▼ | Census Block Group / Population |
1. | $111,131 | GA2150011002 / 1,443 |
2. | $106,250 | GA1530211031 / 2,004 |
3. | $101,216 | GA1530211043 / 1,214 |
4. | $94,028 | GA0950104011 / 1,977 |
5. | $93,375 | GA0950104031 / 1,663 |
6. | $93,333 | GA0950104013 / 1,981 |
7. | $92,821 | GA1770204032 / 1,030 |
8. | $88,508 | GA1530211072 / 2,469 |
9. | $86,750 | GA1530212012 / 984 |
10. | $86,222 | GA1530211033 / 2,436 |
11. | $85,948 | GA1930004001 / 803 |
12. | $85,110 | GA1530214004 / 3,177 |
13. | $84,288 | GA1530211081 / 4,848 |
14. | $83,929 | GA1770203003 / 2,239 |
15. | $83,663 | GA1451204012 / 3,402 |
16. | $83,327 | GA2150101072 / 4,213 |
17. | $82,569 | GA2150010001 / 2,216 |
18. | $82,175 | GA1530212011 / 5,923 |
19. | $80,795 | GA1770204031 / 3,828 |
20. | $80,667 | GA1530211133 / 3,701 |
21. | $79,961 | GA1530211071 / 979 |
22. | $78,941 | GA1451204022 / 4,790 |
23. | $78,750 | GA0950005021 / 1,439 |
23. | $78,750 | GA1770201003 / 3,178 |
25. | $76,424 | GA1530211131 / 5,924 |
26. | $76,359 | GA2250401011 / 1,432 |
27. | $76,143 | GA1530211032 / 2,253 |
28. | $75,227 | GA2150012003 / 941 |
29. | $75,096 | GA2250401024 / 1,477 |
30. | $74,063 | GA1530211132 / 7,912 |
31. | $73,750 | GA2150105013 / 1,923 |
32. | $73,152 | GA2150011001 / 1,123 |
33. | $73,016 | GA3219502001 / 1,578 |
34. | $73,011 | GA2150108021 / 758 |
35. | $72,095 | GA2150101071 / 2,466 |
36. | $71,375 | GA2150107021 / 758 |
37. | $71,286 | GA0810102021 / 704 |
38. | $71,250 | GA2619506002 / 568 |
39. | $71,154 | GA1530211073 / 1,579 |
40. | $70,804 | GA1530211034 / 865 |
41. | $70,583 | GA2150101042 / 2,804 |
42. | $69,444 | GA1530211074 / 2,655 |
43. | $69,135 | GA2150107033 / 1,628 |
44. | $68,942 | GA1530201082 / 1,508 |
45. | $68,852 | GA2150102042 / 1,266 |
46. | $68,750 | GA0950104012 / 2,424 |
46. | $68,750 | GA1530202002 / 816 |
48. | $68,426 | GA1530201091 / 3,995 |
49. | $66,679 | GA1770203002 / 1,878 |
50. | $64,716 | GA2150105012 / 1,579 |
51. | $64,540 | GA1530201092 / 3,586 |
52. | $64,500 | GA0530202052 / 450 |
53. | $64,432 | GA1530212023 / 2,462 |
54. | $64,324 | GA1451204023 / 1,241 |
55. | $64,115 | GA1530209001 / 1,378 |
56. | $63,516 | GA2150107011 / 2,249 |
57. | $63,427 | GA2250401023 / 2,730 |
58. | $63,274 | GA0530202011 / 3,237 |
59. | $62,754 | GA1770204022 / 2,481 |
60. | $62,059 | GA2619503002 / 2,135 |
61. | $61,509 | GA0950005022 / 1,088 |
62. | $61,492 | GA0950116001 / 1,616 |
63. | $61,020 | GA2150102041 / 1,560 |
64. | $60,903 | GA1530214001 / 2,091 |
65. | $60,750 | GA2150101063 / 2,509 |
66. | $60,147 | GA0210136041 / 1,250 |
67. | $60,060 | GA1530211045 / 968 |
68. | $60,000 | GA2150102032 / 5,511 |
69. | $59,348 | GA1530211082 / 1,561 |
70. | $59,243 | GA0810103002 / 1,888 |
71. | $58,750 | GA2150108023 / 3,933 |
72. | $57,697 | GA1530201053 / 2,062 |
73. | $57,228 | GA1530208001 / 1,501 |
74. | $56,961 | GA1530215002 / 2,136 |
75. | $56,827 | GA1530201083 / 2,598 |
76. | $56,652 | GA2150104011 / 1,357 |
77. | $56,646 | GA2359502001 / 2,759 |
78. | $56,524 | GA1530214002 / 1,232 |
79. | $56,324 | GA1530211052 / 2,409 |
80. | $56,188 | GA2150101062 / 2,135 |
81. | $55,690 | GA1770204023 / 1,194 |
82. | $55,255 | GA2879702002 / 1,074 |
83. | $55,192 | GA0810102011 / 1,264 |
84. | $54,952 | GA2150107031 / 1,355 |
85. | $54,583 | GA0950112001 / 2,518 |
86. | $54,545 | GA1530213003 / 1,226 |
87. | $53,935 | GA1530209004 / 585 |
88. | $53,917 | GA0950005011 / 3,390 |
89. | $53,631 | GA1770204024 / 1,442 |
90. | $53,220 | GA1979201001 / 1,707 |
91. | $53,194 | GA2150106022 / 884 |
92. | $52,750 | GA1530212022 / 954 |
93. | $52,740 | GA2150104012 / 2,640 |
94. | $52,669 | GA1530209002 / 1,213 |
95. | $52,353 | GA0810102012 / 1,553 |
96. | $52,273 | GA2150107022 / 2,112 |
97. | $51,961 | GA2150106081 / 2,187 |
98. | $51,750 | GA2150101043 / 1,864 |
99. | $51,381 | GA1530211042 / 2,950 |
100. | $51,250 | GA0530202032 / 432 |
101. | $51,174 | GA0530202053 / 1,084 |
102. | $50,761 | GA2150104022 / 1,705 |
103. | $50,714 | GA0530202031 / 1,121 |
104. | $50,412 | GA2150029012 / 2,063 |
105. | $50,298 | GA1770203001 / 2,949 |
106. | $50,163 | GA0790702012 / 832 |
107. | $50,128 | GA0950005012 / 1,678 |
108. | $50,116 | GA3219501002 / 1,332 |
109. | $50,043 | GA1770201001 / 1,405 |
110. | $49,911 | GA1530201061 / 2,323 |
111. | $49,904 | GA0530202051 / 1,202 |
112. | $49,861 | GA0950104021 / 3,350 |
113. | $49,844 | GA3219502002 / 2,548 |
114. | $49,740 | GA0950109001 / 1,026 |
115. | $49,583 | GA0530202012 / 734 |
116. | $49,167 | GA0790702011 / 1,356 |
117. | $49,076 | GA0950110002 / 1,316 |
118. | $49,048 | GA0790702022 / 1,870 |
119. | $48,696 | GA2499601002 / 1,695 |
120. | $48,097 | GA1770204021 / 2,277 |
121. | $48,021 | GA2619505001 / 919 |
122. | $47,917 | GA0950103023 / 1,863 |
123. | $47,875 | GA2150012001 / 1,372 |
124. | $47,738 | GA2879702001 / 1,331 |
125. | $47,610 | GA2250403012 / 1,453 |
126. | $47,465 | GA0530201002 / 818 |
127. | $47,381 | GA2150101061 / 697 |
128. | $47,292 | GA2699501001 / 1,573 |
129. | $47,240 | GA0950005024 / 1,049 |
130. | $46,809 | GA2150107012 / 1,974 |
131. | $46,538 | GA1530211054 / 878 |
132. | $46,426 | GA1530210004 / 1,377 |
133. | $46,354 | GA2639602002 / 1,887 |
134. | $46,234 | GA2250401021 / 3,284 |
135. | $46,144 | GA2619507002 / 1,804 |
136. | $45,958 | GA2930106001 / 1,186 |
137. | $45,938 | GA1979202001 / 1,558 |
138. | $45,815 | GA2150107023 / 2,347 |
139. | $45,795 | GA2359503001 / 1,308 |
140. | $45,536 | GA0950110001 / 1,142 |
141. | $45,213 | GA0810105002 / 1,002 |
142. | $45,191 | GA2619502001 / 1,483 |
143. | $45,000 | GA1530213001 / 1,497 |
143. | $45,000 | GA2250404001 / 3,871 |
145. | $44,974 | GA0810104005 / 868 |
146. | $44,794 | GA1770201002 / 2,550 |
147. | $44,359 | GA1530202001 / 2,080 |
148. | $44,187 | GA2150106052 / 2,448 |
149. | $44,125 | GA2619505002 / 1,568 |
150. | $44,051 | GA2699503003 / 1,181 |
151. | $43,925 | GA0810101001 / 1,567 |
152. | $43,846 | AL1130309021 / 2,224 |
153. | $43,456 | GA2619505003 / 1,387 |
154. | $43,398 | GA2619506003 / 1,074 |
155. | $43,375 | GA2437902004 / 1,151 |
156. | $43,370 | GA2150108022 / 5,100 |
157. | $43,333 | GA2731205001 / 1,262 |
158. | $43,194 | GA1530201081 / 1,295 |
159. | $42,857 | GA2150012002 / 1,219 |
160. | $42,708 | GA0379501002 / 2,523 |
161. | $42,538 | GA3219505001 / 2,587 |
162. | $42,467 | GA2150102043 / 2,320 |
163. | $42,434 | GA2619502003 / 1,598 |
164. | $42,431 | GA1530215003 / 1,306 |
165. | $42,237 | GA2150104023 / 1,249 |
166. | $42,171 | GA2359501001 / 2,093 |
167. | $42,083 | GA0950006001 / 1,229 |
168. | $41,757 | GA0950109002 / 853 |
169. | $41,625 | GA1770202001 / 1,547 |
170. | $41,395 | GA2150115001 / 1,258 |
171. | $41,225 | GA1530212024 / 607 |
172. | $41,140 | GA2150009002 / 1,351 |
173. | $41,089 | GA2879703003 / 820 |
174. | $40,994 | GA1530214003 / 1,310 |
175. | $40,917 | GA3159602001 / 1,441 |
176. | $40,882 | GA2599504002 / 1,197 |
177. | $40,543 | GA2150002002 / 1,328 |
178. | $40,341 | GA1530207002 / 1,639 |
179. | $40,335 | GA2150108012 / 1,938 |
180. | $40,329 | GA0790702013 / 3,882 |
181. | $40,288 | AL1130312003 / 1,968 |
182. | $40,250 | GA2250403011 / 2,008 |
183. | $40,089 | GA2150106051 / 2,076 |
184. | $40,076 | GA0950105002 / 823 |
185. | $40,000 | GA0950007001 / 1,877 |
186. | $39,957 | GA2150106021 / 2,080 |
187. | $39,952 | GA0790701002 / 1,333 |
188. | $39,926 | GA2499602001 / 1,794 |
189. | $39,833 | GA2150106073 / 2,068 |
190. | $39,830 | GA2150008001 / 1,046 |
191. | $39,675 | GA0950004001 / 1,423 |
192. | $39,583 | GA1530215001 / 1,423 |
193. | $38,869 | GA2619508001 / 970 |
194. | $38,750 | GA1930003002 / 1,245 |
195. | $38,571 | GA2150106071 / 996 |
196. | $38,542 | GA2150021002 / 1,392 |
197. | $38,523 | GA2250402002 / 2,153 |
198. | $38,500 | GA2731202002 / 869 |
199. | $38,415 | GA1930002002 / 1,355 |
200. | $38,350 | GA0950004003 / 2,436 |
201. | $38,304 | GA0810103001 / 1,047 |
202. | $38,250 | GA2150023001 / 1,824 |
203. | $38,155 | GA0939701003 / 892 |
204. | $37,303 | GA0379501001 / 716 |
205. | $37,271 | GA1530202004 / 837 |
206. | $37,240 | GA0950011004 / 1,380 |
207. | $37,212 | GA2150106082 / 1,961 |
208. | $37,188 | GA0950004002 / 2,062 |
208. | $37,188 | GA2619501001 / 1,468 |
210. | $37,093 | GA1530201051 / 2,259 |
211. | $37,016 | GA0939701001 / 3,585 |
212. | $36,750 | GA3219502004 / 1,494 |
213. | $36,667 | GA2150021001 / 913 |
214. | $36,358 | GA1530211044 / 1,826 |
215. | $36,354 | GA0810104001 / 1,023 |
216. | $36,250 | GA1979201002 / 2,392 |
216. | $36,250 | GA1530210002 / 1,845 |
218. | $36,071 | GA0939703001 / 2,536 |
219. | $35,956 | AL1130309022 / 2,429 |
220. | $35,942 | GA1530210001 / 1,695 |
221. | $35,893 | GA1530204001 / 1,425 |
222. | $35,862 | GA0950006002 / 1,454 |
223. | $35,833 | GA0950105001 / 1,340 |
224. | $35,652 | GA2599504001 / 847 |
225. | $35,650 | GA2150010003 / 796 |
226. | $35,510 | GA0790702021 / 1,502 |
227. | $35,450 | GA2619504003 / 1,644 |
228. | $35,417 | GA2150010002 / 1,773 |
229. | $35,313 | GA2150105011 / 1,316 |
230. | $35,307 | GA1530203004 / 2,311 |
231. | $35,065 | GA2150101041 / 1,084 |
232. | $34,938 | GA1530209003 / 415 |
233. | $34,931 | GA2619508003 / 816 |
234. | $34,712 | GA0950116002 / 590 |
235. | $34,609 | GA2150106023 / 1,908 |
236. | $34,464 | GA0950106021 / 1,937 |
237. | $34,340 | GA2150115003 / 1,123 |
238. | $34,333 | GA1930001002 / 785 |
239. | $34,250 | GA2639603001 / 867 |
240. | $33,800 | GA1930003001 / 2,805 |
241. | $33,750 | GA0530201001 / 2,198 |
242. | $33,681 | GA2619506001 / 364 |
243. | $33,382 | GA2619504002 / 898 |
244. | $33,301 | GA2150009001 / 1,235 |
245. | $33,148 | GA3219504001 / 1,670 |
246. | $33,125 | GA2150115006 / 622 |
247. | $32,783 | GA0950106022 / 2,099 |
248. | $32,591 | GA0950112003 / 929 |
249. | $32,540 | GA2437902001 / 940 |
250. | $32,500 | GA2731202001 / 879 |
251. | $32,352 | GA0939703003 / 1,880 |
252. | $32,321 | GA1530211051 / 1,612 |
253. | $32,212 | GA2150029022 / 1,694 |
254. | $32,083 | GA1530201052 / 1,739 |
255. | $31,901 | GA2250403021 / 2,322 |
256. | $31,724 | GA0950011005 / 2,201 |
257. | $31,672 | GA0810102013 / 2,002 |
258. | $31,541 | GA3219501001 / 1,309 |
259. | $31,500 | GA2619504001 / 1,225 |
260. | $31,484 | GA1530211053 / 512 |
261. | $31,425 | GA3219505002 / 1,157 |
262. | $31,280 | GA0950009001 / 1,345 |
263. | $31,213 | GA2731204002 / 676 |
264. | $31,122 | GA2150104021 / 641 |
265. | $31,023 | GA1930002001 / 1,195 |
266. | $30,921 | GA1530213004 / 657 |
267. | $30,893 | GA2150020001 / 1,758 |
268. | $30,854 | GA2359502004 / 873 |
269. | $30,578 | GA2150107013 / 1,556 |
270. | $30,329 | GA2619507004 / 602 |
271. | $30,294 | GA0939702002 / 1,171 |
272. | $30,159 | GA2150033023 / 971 |
273. | $30,144 | GA1530210003 / 1,420 |
274. | $30,083 | GA2150034001 / 471 |
275. | $29,904 | GA2879703001 / 1,382 |
276. | $29,896 | GA1930004005 / 987 |
277. | $29,894 | GA2619507001 / 1,588 |
278. | $29,844 | GA0379502004 / 1,138 |
279. | $29,792 | GA2150105021 / 1,665 |
280. | $29,702 | GA2731203001 / 714 |
281. | $29,605 | GA2619503001 / 1,843 |
282. | $29,479 | GA0950011002 / 1,374 |
283. | $29,415 | GA1530208002 / 890 |
284. | $29,167 | GA1930004006 / 576 |
285. | $29,141 | GA0950005023 / 592 |
286. | $29,128 | GA2437901001 / 1,177 |
287. | $29,122 | GA2359502006 / 1,237 |
288. | $28,996 | GA2150030001 / 571 |
289. | $28,615 | GA2699503001 / 1,442 |
290. | $28,603 | GA2150033022 / 757 |
291. | $28,523 | GA0530202061 / 426 |
292. | $28,519 | GA2150033011 / 1,461 |
293. | $28,417 | GA2619508002 / 792 |
294. | $28,328 | GA1530202003 / 1,294 |
295. | $28,324 | GA0950010002 / 1,448 |
296. | $28,281 | GA2150115002 / 354 |
296. | $28,281 | GA0810102022 / 894 |
298. | $28,125 | GA2599504003 / 1,434 |
299. | $27,716 | GA3219502003 / 1,339 |
300. | $27,679 | GA2150105014 / 1,022 |
300. | $27,679 | GA2599501001 / 1,286 |
302. | $27,543 | GA2150022003 / 565 |
303. | $27,500 | GA2150107032 / 1,535 |
304. | $27,417 | GA0939702001 / 588 |
305. | $27,383 | GA0810104002 / 898 |
306. | $27,319 | GA0950113001 / 2,242 |
307. | $27,290 | GA2150106072 / 2,261 |
308. | $27,028 | GA1930001001 / 886 |
309. | $26,984 | GA0950107001 / 1,797 |
310. | $26,866 | GA2699502002 / 1,622 |
311. | $26,731 | GA3159604002 / 579 |
312. | $26,518 | GA0950103024 / 566 |
313. | $26,320 | GA3079601001 / 1,531 |
314. | $26,250 | GA1530207003 / 729 |
315. | $26,172 | GA3159603001 / 1,778 |
316. | $26,142 | GA1930004002 / 1,176 |
317. | $26,121 | GA2150112001 / 782 |
318. | $25,987 | GA1930003003 / 1,189 |
319. | $25,957 | GA0810104004 / 1,530 |
320. | $25,833 | GA2731204003 / 933 |
321. | $25,733 | GA0950112002 / 1,395 |
322. | $25,694 | GA0810101002 / 1,929 |
323. | $25,539 | GA2150018001 / 1,076 |
324. | $25,262 | GA2250404002 / 1,983 |
325. | $25,253 | GA1979202002 / 1,339 |
326. | $25,200 | GA2639603002 / 536 |
327. | $25,114 | GA2731204001 / 1,711 |
328. | $25,000 | GA1530213002 / 567 |
329. | $24,830 | GA2150022004 / 736 |
330. | $24,779 | GA0950001001 / 2,043 |
331. | $24,773 | GA1530212021 / 1,235 |
332. | $24,519 | GA1530211041 / 1,175 |
333. | $24,489 | GA2250401022 / 1,521 |
334. | $24,250 | GA2499601001 / 1,266 |
335. | $24,135 | GA2599501002 / 1,067 |
336. | $24,071 | GA2150029021 / 1,220 |
337. | $24,028 | GA2399603001 / 1,580 |
338. | $23,841 | AL1130308002 / 1,502 |
339. | $23,750 | GA2879702005 / 565 |
340. | $23,661 | GA0950107002 / 1,472 |
341. | $23,656 | GA2619503004 / 1,636 |
342. | $23,438 | GA0810105001 / 756 |
343. | $23,281 | GA2150112002 / 970 |
344. | $23,265 | GA2437902005 / 1,123 |
345. | $22,958 | GA2731203002 / 1,156 |
346. | $22,813 | GA2699503004 / 773 |
347. | $22,545 | GA0950001004 / 1,659 |
348. | $22,536 | GA0950002001 / 926 |
349. | $22,386 | GA0950010001 / 388 |
350. | $22,237 | GA0950009002 / 822 |
351. | $22,167 | GA2359502003 / 567 |
352. | $21,932 | GA2150111002 / 1,065 |
353. | $21,926 | GA2359502005 / 1,094 |
354. | $21,646 | GA2150022001 / 611 |
355. | $21,541 | GA0939703002 / 1,183 |
356. | $21,522 | GA0810102023 / 1,139 |
357. | $21,518 | GA0939703004 / 1,044 |
358. | $21,477 | GA2150032003 / 1,257 |
359. | $21,389 | GA2437902002 / 1,440 |
360. | $21,382 | GA0950001005 / 427 |
361. | $21,324 | GA2150115005 / 883 |
362. | $21,250 | GA2150020002 / 1,119 |
363. | $21,176 | GA0950106012 / 1,309 |
364. | $21,169 | GA2619502002 / 613 |
365. | $21,030 | GA2150107034 / 1,185 |
366. | $20,808 | GA2250402001 / 2,649 |
367. | $20,750 | GA2619502004 / 1,101 |
368. | $20,737 | AL1130308001 / 1,990 |
369. | $20,625 | GA0950106011 / 1,501 |
369. | $20,625 | GA2150033021 / 687 |
371. | $20,616 | GA1979202003 / 1,407 |
372. | $20,561 | GA0950103025 / 1,835 |
373. | $20,556 | GA0950002003 / 1,034 |
374. | $20,477 | GA0810101003 / 618 |
375. | $20,313 | GA2699503002 / 1,450 |
376. | $20,000 | GA2150115004 / 1,579 |
377. | $19,875 | GA0790701003 / 765 |
378. | $19,787 | GA3079602001 / 1,196 |
379. | $19,459 | GA2639602001 / 941 |
380. | $19,423 | GA1530207001 / 955 |
381. | $19,281 | GA2150030002 / 958 |
382. | $19,250 | GA2731203004 / 1,055 |
383. | $19,129 | GA0950014032 / 1,510 |
384. | $18,854 | GA0950011001 / 783 |
385. | $18,792 | GA3219505003 / 1,576 |
386. | $18,730 | GA0950008002 / 1,042 |
387. | $18,721 | GA1930004004 / 1,000 |
387. | $18,721 | GA0950001002 / 677 |
389. | $18,663 | GA2150030003 / 584 |
390. | $18,563 | GA0950103022 / 706 |
391. | $18,553 | GA0950109003 / 163 |
392. | $18,438 | GA0939701002 / 1,404 |
393. | $18,333 | GA2437901002 / 803 |
394. | $18,250 | GA2150028001 / 829 |
395. | $18,164 | GA2879702003 / 1,202 |
396. | $17,875 | GA2150022002 / 391 |
397. | $17,820 | GA0950015003 / 1,268 |
398. | $17,692 | GA1930004003 / 551 |
399. | $17,404 | GA0950015002 / 902 |
400. | $17,182 | GA2437902003 / 1,090 |
401. | $16,591 | GA0950107003 / 2,435 |
402. | $16,521 | GA2150034002 / 1,925 |
403. | $16,418 | GA2150029011 / 605 |
404. | $16,379 | GA0950011003 / 1,074 |
405. | $16,333 | GA2879702004 / 1,431 |
406. | $16,172 | GA2150032001 / 547 |
407. | $16,150 | GA0950103021 / 693 |
408. | $15,724 | GA0950002002 / 444 |
409. | $15,473 | GA0790701001 / 1,281 |
410. | $15,469 | GA2150028002 / 727 |
411. | $15,439 | GA2619507003 / 1,862 |
412. | $15,387 | GA0950014031 / 1,485 |
413. | $15,238 | GA2150027001 / 2,121 |
414. | $14,940 | GA2699502001 / 834 |
415. | $14,620 | GA0810102014 / 1,270 |
416. | $14,089 | GA2619503005 / 2,002 |
417. | $13,472 | GA2150024001 / 1,537 |
418. | $13,284 | GA2731203003 / 392 |
419. | $12,679 | GA0950001003 / 1,170 |
420. | $12,487 | GA0950114002 / 632 |
421. | $12,367 | GA0950114001 / 588 |
422. | $12,298 | GA2619503003 / 905 |
423. | $12,212 | GA2150025001 / 2,581 |
424. | $11,958 | GA2359502002 / 577 |
425. | $10,873 | GA0950008001 / 794 |
426. | $10,829 | GA2150025002 / 438 |
427. | $10,685 | GA2150032002 / 639 |
428. | $9,899 | GA0810103003 / 850 |
429. | $9,500 | GA0810104003 / 380 |
430. | $9,210 | GA0950015001 / 939 |
431. | $8,500 | GA0950002004 / 881 |
Please note that we only rank locations with 'Median Household Income' data. The rank above might not be a complete list. Locations without 'Median Household Income' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.