Local Data Search
A total of 359 results found. Show Results on Map.
| Rank | Czech as First Ancestry Population Percentage ▼ | City / Population |
| 1. | 18.1% | Hainesburg, NJ / 94 |
| 2. | 16.9% | Vienna, NJ / 754 |
| 3. | 8.2% | Diamond Beach, NJ / 145 |
| 4. | 6.9% | Stockton, NJ / 516 |
| 5. | 4.9% | Columbia, NJ / 353 |
| 6. | 4.7% | Mount Hermon, NJ / 130 |
| 7. | 3.3% | Mount Arlington, NJ / 5,140 |
| 8. | 3.2% | East Millstone, NJ / 507 |
| 9. | 3.1% | Annandale, NJ / 1,404 |
| 10. | 2.9% | Pine Beach, NJ / 2,239 |
| 11. | 2.9% | Farmingdale, NJ / 1,396 |
| 12. | 2.9% | Union Beach, NJ / 6,040 |
| 13. | 2.8% | Loch Arbour, NJ / 198 |
| 14. | 2.8% | Middlebush, NJ / 2,341 |
| 15. | 2.6% | Ogdensburg, NJ / 2,348 |
| 16. | 2.5% | Stanhope, NJ / 3,543 |
| 17. | 2.4% | Cliffwood Beach, NJ / 3,331 |
| 18. | 2.3% | Hamburg, NJ / 3,225 |
| 19. | 2.1% | Hope, NJ / 189 |
| 20. | 2.1% | Wildwood Crest, NJ / 3,225 |
| 20. | 2.1% | Ramsey, NJ / 14,650 |
| 22. | 2.0% | Bordentown, NJ / 3,912 |
| 23. | 2.0% | Waretown, NJ / 1,421 |
| 23. | 2.0% | Rocky Hill, NJ / 554 |
| 25. | 2.0% | Kenvil, NJ / 2,694 |
| 26. | 1.9% | Brownville, NJ / 2,924 |
| 27. | 1.9% | North Caldwell, NJ / 6,407 |
| 28. | 1.9% | Leisure Village East, NJ / 3,689 |
| 29. | 1.9% | Greenwich, NJ / 2,666 |
| 30. | 1.8% | Linwood, NJ / 7,071 |
| 31. | 1.8% | Leisuretowne, NJ / 3,633 |
| 32. | 1.8% | North Haledon, NJ / 8,478 |
| 33. | 1.7% | Lakehurst, NJ / 2,676 |
| 34. | 1.7% | Green Knoll, NJ / 5,954 |
| 35. | 1.6% | Leisure Knoll, NJ / 2,453 |
| 36. | 1.5% | Avon By The Sea, NJ / 1,810 |
| 37. | 1.5% | Flemington, NJ / 4,688 |
| 38. | 1.5% | Yardville, NJ / 6,825 |
| 39. | 1.5% | Holiday Heights, NJ / 2,205 |
| 39. | 1.5% | Turnersville, NJ / 3,506 |
| 41. | 1.5% | Highlands, NJ / 4,985 |
| 42. | 1.4% | Roosevelt, NJ / 744 |
| 43. | 1.4% | Dunellen, NJ / 7,317 |
| 44. | 1.4% | Silver Ridge, NJ / 1,447 |
| 45. | 1.4% | Dover Beaches North, NJ / 990 |
| 46. | 1.3% | Woodcliff Lake, NJ / 5,785 |
| 46. | 1.3% | Kendall Park, NJ / 10,331 |
| 48. | 1.3% | South Amboy, NJ / 8,749 |
| 48. | 1.3% | Atlantic Highlands, NJ / 4,357 |
| 48. | 1.3% | Olivet, NJ / 1,423 |
| 51. | 1.3% | Englishtown, NJ / 2,101 |
| 52. | 1.3% | Keansburg, NJ / 10,011 |
| 53. | 1.2% | Morris Plains, NJ / 5,635 |
| 54. | 1.2% | Medford Lakes, NJ / 4,138 |
| 55. | 1.2% | Woodland Park Borough, NJ / 12,129 |
| 56. | 1.2% | Dover, NJ / 18,298 |
| 57. | 1.2% | Monmouth Beach, NJ / 3,278 |
| 58. | 1.1% | Lambertville, NJ / 3,876 |
| 59. | 1.1% | Blackwood, NJ / 4,645 |
| 60. | 1.1% | Alpha, NJ / 2,320 |
| 61. | 1.0% | Milltown, NJ / 6,974 |
| 62. | 1.0% | Navesink, NJ / 1,638 |
| 62. | 1.0% | Finderne, NJ / 6,205 |
| 64. | 1.0% | Hawthorne, NJ / 18,944 |
| 65. | 1.0% | Bradley Gardens, NJ / 13,902 |
| 66. | 1.0% | Burlington, NJ / 9,865 |
| 66. | 1.0% | Crestwood Village, NJ / 7,703 |
| 68. | 1.0% | Watchung, NJ / 5,855 |
| 69. | 1.0% | Ocean City, NJ / 11,520 |
| 69. | 1.0% | South Plainfield, NJ / 23,686 |
| 71. | 1.0% | Beach Haven West, NJ / 4,140 |
| 71. | 1.0% | Twin Rivers, NJ / 7,402 |
| 73. | 0.9% | West Freehold, NJ / 13,922 |
| 73. | 0.9% | Ringwood, NJ / 12,320 |
| 73. | 0.9% | Middlesex, NJ / 13,766 |
| 73. | 0.9% | Lincoln Park, NJ / 10,515 |
| 77. | 0.9% | Cedar Glen Lakes, NJ / 1,527 |
| 78. | 0.9% | New Milford, NJ / 16,524 |
| 78. | 0.9% | Metuchen, NJ / 13,707 |
| 80. | 0.9% | Manville, NJ / 10,426 |
| 80. | 0.9% | Little Ferry, NJ / 10,773 |
| 82. | 0.9% | Leonia, NJ / 9,051 |
| 83. | 0.9% | White Meadow Lake, NJ / 8,734 |
| 84. | 0.8% | Beach Haven, NJ / 1,048 |
| 85. | 0.8% | Rockaway, NJ / 6,480 |
| 85. | 0.8% | Belmar, NJ / 5,760 |
| 87. | 0.8% | Peapack And Gladstone Borough, NJ / 2,580 |
| 87. | 0.8% | West Long Branch, NJ / 8,391 |
| 87. | 0.8% | Jamesburg, NJ / 5,963 |
| 87. | 0.8% | Point Pleasant, NJ / 18,481 |
| 87. | 0.8% | Fieldsboro, NJ / 603 |
| 87. | 0.8% | Somerdale, NJ / 5,246 |
| 87. | 0.8% | Franklin, NJ / 4,994 |
| 94. | 0.8% | Marlton, NJ / 10,397 |
| 95. | 0.8% | Frenchtown, NJ / 1,486 |
| 96. | 0.7% | Dover Beaches South, NJ / 1,215 |
| 96. | 0.7% | Ridgewood, NJ / 25,270 |
| 96. | 0.7% | Red Bank, NJ / 12,250 |
| 96. | 0.7% | Island Heights, NJ / 1,710 |
| 100. | 0.7% | Wharton, NJ / 6,586 |
| 100. | 0.7% | Westwood, NJ / 11,056 |
| 100. | 0.7% | Silver Lake CDP, NJ / 300 |
| 103. | 0.7% | Roselle Park, NJ / 13,465 |
| 104. | 0.7% | Helmetta, NJ / 2,390 |
| 105. | 0.7% | Ramblewood, NJ / 5,999 |
| 105. | 0.7% | Wenonah, NJ / 2,115 |
| 105. | 0.7% | Margate City, NJ / 6,343 |
| 108. | 0.7% | Vernon Valley, NJ / 1,416 |
| 108. | 0.7% | Oakland, NJ / 12,914 |
| 110. | 0.7% | Spring Lake, NJ / 2,999 |
| 111. | 0.7% | Ocean Acres, NJ / 16,187 |
| 112. | 0.7% | Whitehouse Station, NJ / 1,831 |
| 112. | 0.7% | Groveville, NJ / 2,924 |
| 114. | 0.7% | East Freehold, NJ / 5,429 |
| 114. | 0.7% | Highland Park, NJ / 14,224 |
| 114. | 0.7% | Buena, NJ / 4,623 |
| 117. | 0.6% | Bernardsville, NJ / 7,766 |
| 117. | 0.6% | Haddonfield, NJ / 11,521 |
| 117. | 0.6% | Gibbstown, NJ / 3,594 |
| 117. | 0.6% | River Edge, NJ / 11,483 |
| 121. | 0.6% | Sea Girt, NJ / 1,844 |
| 121. | 0.6% | Old Tappan, NJ / 5,835 |
| 123. | 0.6% | Absecon, NJ / 8,400 |
| 123. | 0.6% | Barnegat, NJ / 3,502 |
| 125. | 0.6% | Demarest, NJ / 4,929 |
| 125. | 0.6% | Surf City, NJ / 1,148 |
| 127. | 0.6% | Plainsboro Center, NJ / 2,904 |
| 127. | 0.6% | Moonachie, NJ / 2,741 |
| 129. | 0.6% | Bloomsbury, NJ / 769 |
| 129. | 0.6% | Hillsdale, NJ / 10,381 |
| 129. | 0.6% | Manahawkin, NJ / 2,608 |
| 129. | 0.6% | Yorketown, NJ / 6,598 |
| 133. | 0.6% | Shark River Hills, NJ / 3,770 |
| 133. | 0.6% | Longport, NJ / 949 |
| 133. | 0.6% | Lebanon, NJ / 1,765 |
| 136. | 0.6% | Roebling, NJ / 3,861 |
| 137. | 0.6% | Point Pleasant Beach, NJ / 4,664 |
| 137. | 0.6% | Ship Bottom, NJ / 1,025 |
| 139. | 0.5% | Pemberton, NJ / 1,467 |
| 139. | 0.5% | Toms River, NJ / 89,459 |
| 139. | 0.5% | Leonardo, NJ / 2,236 |
| 139. | 0.5% | Franklin Center, NJ / 4,227 |
| 139. | 0.5% | Somerville, NJ / 12,175 |
| 139. | 0.5% | Six Mile Run, NJ / 3,106 |
| 139. | 0.5% | Hamilton Square, NJ / 12,870 |
| 139. | 0.5% | Barclay, NJ / 4,321 |
| 147. | 0.5% | Pompton Lakes, NJ / 11,162 |
| 148. | 0.5% | Allendale, NJ / 6,666 |
| 148. | 0.5% | Concordia, NJ / 3,092 |
| 148. | 0.5% | Chatham, NJ / 9,000 |
| 148. | 0.5% | Cape May Point, NJ / 200 |
| 148. | 0.5% | Port Monmouth, NJ / 3,915 |
| 153. | 0.5% | Beattystown, NJ / 4,583 |
| 153. | 0.5% | Beachwood, NJ / 11,127 |
| 153. | 0.5% | Madison, NJ / 16,043 |
| 153. | 0.5% | Martinsville, NJ / 11,914 |
| 157. | 0.5% | Newton, NJ / 7,999 |
| 157. | 0.5% | Woodstown, NJ / 3,497 |
| 157. | 0.5% | Ridgefield Park, NJ / 12,875 |
| 160. | 0.5% | Swedesboro, NJ / 2,627 |
| 161. | 0.5% | Chester, NJ / 1,557 |
| 161. | 0.5% | Princeton, NJ / 28,940 |
| 161. | 0.5% | Glen Gardner, NJ / 1,533 |
| 161. | 0.5% | Hoboken, NJ / 51,979 |
| 165. | 0.5% | Summit, NJ / 21,826 |
| 165. | 0.5% | Long Branch, NJ / 30,590 |
| 165. | 0.5% | Morristown, NJ / 18,580 |
| 168. | 0.5% | Garfield, NJ / 30,996 |
| 168. | 0.5% | Short Hills, NJ / 12,729 |
| 168. | 0.5% | Mountain Lakes, NJ / 4,235 |
| 168. | 0.5% | Allenhurst, NJ / 486 |
| 172. | 0.5% | Westfield, NJ / 30,647 |
| 172. | 0.5% | Browns Mills, NJ / 10,973 |
| 172. | 0.5% | Califon, NJ / 1,245 |
| 175. | 0.4% | Strathmore, NJ / 6,975 |
| 175. | 0.4% | Washington, NJ / 6,439 |
| 175. | 0.4% | Tinton Falls, NJ / 17,933 |
| 178. | 0.4% | Iselin, NJ / 18,457 |
| 178. | 0.4% | Boonton, NJ / 8,424 |
| 180. | 0.4% | West New York, NJ / 51,511 |
| 180. | 0.4% | Pine Hill, NJ / 10,383 |
| 182. | 0.4% | Sayreville, NJ / 43,962 |
| 183. | 0.4% | Beckett, NJ / 4,771 |
| 183. | 0.4% | Pennsville, NJ / 11,864 |
| 183. | 0.4% | Ellisburg, NJ / 4,684 |
| 183. | 0.4% | Highland Lakes, NJ / 4,944 |
| 187. | 0.4% | Ocean Gate, NJ / 2,072 |
| 187. | 0.4% | Clifton, NJ / 85,138 |
| 187. | 0.4% | Phillipsburg, NJ / 14,717 |
| 187. | 0.4% | Far Hills, NJ / 1,101 |
| 187. | 0.4% | Fair Lawn, NJ / 32,962 |
| 192. | 0.4% | Beverly, NJ / 2,573 |
| 192. | 0.4% | Woodbury, NJ / 10,098 |
| 192. | 0.4% | Montvale, NJ / 8,000 |
| 195. | 0.4% | Bogota, NJ / 8,277 |
| 195. | 0.4% | Sewaren, NJ / 2,341 |
| 197. | 0.4% | Folsom, NJ / 1,799 |
| 197. | 0.4% | Waldwick, NJ / 9,808 |
| 197. | 0.4% | Williamstown, NJ / 15,425 |
| 197. | 0.4% | Elmwood Park, NJ / 19,921 |
| 201. | 0.4% | Caldwell, NJ / 7,864 |
| 201. | 0.4% | Essex Fells, NJ / 2,140 |
| 201. | 0.4% | Cresskill, NJ / 8,669 |
| 201. | 0.4% | Port Reading, NJ / 3,836 |
| 201. | 0.4% | Spotswood, NJ / 8,359 |
| 201. | 0.4% | Barnegat Light, NJ / 592 |
| 207. | 0.3% | Englewood, NJ / 27,435 |
| 207. | 0.3% | Bergenfield, NJ / 27,157 |
| 207. | 0.3% | Fort Dix, NJ / 7,948 |
| 207. | 0.3% | Laurel Springs, NJ / 1,910 |
| 207. | 0.3% | Glassboro, NJ / 18,798 |
| 212. | 0.3% | Moorestown-Lenola, NJ / 14,436 |
| 212. | 0.3% | Upper Montclair, NJ / 11,637 |
| 212. | 0.3% | Cliffside Park, NJ / 24,532 |
| 215. | 0.3% | Springdale, NJ / 14,402 |
| 215. | 0.3% | Upper Saddle River, NJ / 8,304 |
| 215. | 0.3% | Brielle, NJ / 4,772 |
| 218. | 0.3% | Paramus, NJ / 26,612 |
| 218. | 0.3% | Collingswood, NJ / 13,929 |
| 218. | 0.3% | Merchantville, NJ / 3,803 |
| 218. | 0.3% | Eatontown, NJ / 12,323 |
| 218. | 0.3% | Whittingham, NJ / 2,423 |
| 223. | 0.3% | Seaside Park, NJ / 1,406 |
| 223. | 0.3% | Pennington, NJ / 2,588 |
| 223. | 0.3% | Oceanport, NJ / 5,834 |
| 223. | 0.3% | Rutherford, NJ / 18,297 |
| 223. | 0.3% | Fords, NJ / 15,028 |
| 223. | 0.3% | South Toms River, NJ / 3,722 |
| 229. | 0.3% | Oradell, NJ / 8,080 |
| 229. | 0.3% | Hasbrouck Heights, NJ / 11,989 |
| 229. | 0.3% | Linden, NJ / 41,054 |
| 229. | 0.3% | Haddon Heights, NJ / 7,425 |
| 229. | 0.3% | Kenilworth, NJ / 8,045 |
| 229. | 0.3% | Kingston Estates, NJ / 6,161 |
| 235. | 0.3% | Stone Harbor, NJ / 775 |
| 235. | 0.3% | Ramtown, NJ / 5,886 |
| 235. | 0.3% | Newfield, NJ / 1,681 |
| 235. | 0.3% | Old Bridge, NJ / 23,572 |
| 239. | 0.3% | Clementon, NJ / 4,972 |
| 239. | 0.3% | Hopatcong, NJ / 14,921 |
| 239. | 0.3% | Berlin, NJ / 7,587 |
| 239. | 0.3% | Franklin Lakes, NJ / 10,726 |
| 239. | 0.3% | Neptune City, NJ / 4,849 |
| 239. | 0.3% | Echelon, NJ / 10,831 |
| 245. | 0.3% | Hi Nella, NJ / 817 |
| 245. | 0.3% | North Middletown, NJ / 3,231 |
| 245. | 0.3% | Heathcote, NJ / 5,668 |
| 245. | 0.3% | Mercerville, NJ / 13,048 |
| 249. | 0.3% | West Cape May, NJ / 855 |
| 249. | 0.3% | Pine Lake Park, NJ / 9,295 |
| 249. | 0.3% | Wallington, NJ / 11,487 |
| 249. | 0.3% | Perth Amboy, NJ / 51,727 |
| 249. | 0.3% | Northfield, NJ / 8,616 |
| 249. | 0.3% | Shrewsbury, NJ / 3,899 |
| 249. | 0.3% | Saddle River, NJ / 3,176 |
| 249. | 0.3% | Budd Lake, NJ / 8,234 |
| 257. | 0.2% | Laurence Harbor, NJ / 6,845 |
| 257. | 0.2% | Keyport, NJ / 7,213 |
| 257. | 0.2% | New Providence, NJ / 12,314 |
| 257. | 0.2% | Raritan, NJ / 7,318 |
| 257. | 0.2% | North Plainfield, NJ / 22,056 |
| 257. | 0.2% | East Newark, NJ / 2,551 |
| 257. | 0.2% | Allentown, NJ / 1,828 |
| 257. | 0.2% | High Bridge, NJ / 3,621 |
| 265. | 0.2% | Avenel, NJ / 17,952 |
| 265. | 0.2% | Succasunna, NJ / 9,047 |
| 265. | 0.2% | Secaucus, NJ / 17,614 |
| 265. | 0.2% | Somers Point, NJ / 10,783 |
| 265. | 0.2% | Glen Ridge, NJ / 7,606 |
| 265. | 0.2% | Northvale, NJ / 4,725 |
| 265. | 0.2% | Harvey Cedars, NJ / 479 |
| 265. | 0.2% | Greentree, NJ / 11,529 |
| 265. | 0.2% | Fair Haven, NJ / 6,093 |
| 265. | 0.2% | Hackensack, NJ / 43,903 |
| 275. | 0.2% | Mullica Hill, NJ / 4,437 |
| 275. | 0.2% | Park Ridge, NJ / 8,763 |
| 275. | 0.2% | Somerset, NJ / 24,375 |
| 275. | 0.2% | White Horse, NJ / 8,422 |
| 275. | 0.2% | Hopewell, NJ / 1,891 |
| 280. | 0.2% | Garwood, NJ / 4,323 |
| 280. | 0.2% | Fanwood, NJ / 7,475 |
| 280. | 0.2% | Ventnor City, NJ / 10,632 |
| 280. | 0.2% | Riverton, NJ / 2,766 |
| 280. | 0.2% | Holiday City-Berkeley, NJ / 12,013 |
| 280. | 0.2% | Asbury Park, NJ / 15,933 |
| 280. | 0.2% | Ocean Grove, NJ / 3,134 |
| 280. | 0.2% | Glendora, NJ / 4,557 |
| 288. | 0.2% | Villas, NJ / 9,199 |
| 288. | 0.2% | Hackettstown, NJ / 9,633 |
| 288. | 0.2% | Haworth, NJ / 3,419 |
| 288. | 0.2% | Cape May, NJ / 3,576 |
| 288. | 0.2% | Kinnelon, NJ / 10,349 |
| 293. | 0.2% | Rahway, NJ / 27,994 |
| 293. | 0.2% | Victory Gardens, NJ / 1,646 |
| 293. | 0.2% | Midland Park, NJ / 7,229 |
| 296. | 0.2% | Wood Ridge, NJ / 8,249 |
| 296. | 0.2% | Hampton, NJ / 1,174 |
| 296. | 0.2% | Avalon, NJ / 1,852 |
| 299. | 0.2% | Woodbridge, NJ / 20,434 |
| 299. | 0.2% | Franklin Park, NJ / 14,815 |
| 299. | 0.2% | Brooklawn, NJ / 1,879 |
| 299. | 0.2% | Norwood, NJ / 5,769 |
| 303. | 0.2% | Lodi, NJ / 24,428 |
| 303. | 0.2% | Lakewood, NJ / 51,944 |
| 303. | 0.2% | Manasquan, NJ / 5,841 |
| 303. | 0.2% | Closter, NJ / 8,519 |
| 303. | 0.2% | Colonia, NJ / 17,530 |
| 303. | 0.2% | Bound Brook, NJ / 10,607 |
| 309. | 0.2% | Millville, NJ / 28,603 |
| 309. | 0.2% | Little Silver, NJ / 5,920 |
| 309. | 0.2% | Pitman, NJ / 8,959 |
| 309. | 0.2% | East Rutherford, NJ / 9,298 |
| 309. | 0.2% | Edgewater, NJ / 11,969 |
| 314. | 0.1% | Carteret, NJ / 23,770 |
| 314. | 0.1% | Bayonne, NJ / 64,763 |
| 314. | 0.1% | Vineland, NJ / 60,985 |
| 314. | 0.1% | Jersey City, NJ / 255,861 |
| 318. | 0.1% | Maywood, NJ / 9,651 |
| 318. | 0.1% | Mendham, NJ / 5,008 |
| 318. | 0.1% | North Arlington, NJ / 15,587 |
| 318. | 0.1% | Estell Manor, NJ / 1,684 |
| 318. | 0.1% | Kearny, NJ / 41,538 |
| 323. | 0.1% | Carneys Point, NJ / 7,268 |
| 324. | 0.1% | South River, NJ / 16,177 |
| 324. | 0.1% | Madison Park, NJ / 6,616 |
| 324. | 0.1% | Fort Lee, NJ / 36,048 |
| 327. | 0.1% | Runnemede, NJ / 8,435 |
| 327. | 0.1% | Dumont, NJ / 17,706 |
| 327. | 0.1% | Florham Park, NJ / 11,820 |
| 327. | 0.1% | Butler, NJ / 7,636 |
| 327. | 0.1% | Brookdale, NJ / 9,706 |
| 327. | 0.1% | Freehold, NJ / 12,018 |
| 333. | 0.1% | Ashland, NJ / 8,260 |
| 333. | 0.1% | Plainfield, NJ / 50,423 |
| 333. | 0.1% | Brigantine, NJ / 9,420 |
| 333. | 0.1% | Bridgeton, NJ / 25,252 |
| 333. | 0.1% | Fairview, NJ / 14,126 |
| 333. | 0.1% | Princeton Meadows, NJ / 13,631 |
| 333. | 0.1% | Ridgefield, NJ / 11,191 |
| 340. | 0.1% | Pleasantville, NJ / 20,436 |
| 340. | 0.1% | New Brunswick, NJ / 55,804 |
| 340. | 0.1% | Guttenberg, NJ / 11,397 |
| 343. | 0.1% | Robertsville, NJ / 11,055 |
| 343. | 0.1% | Haledon, NJ / 8,397 |
| 343. | 0.1% | Passaic, NJ / 70,651 |
| 343. | 0.1% | Trenton, NJ / 84,459 |
| 343. | 0.1% | Lake Mohawk, NJ / 9,568 |
| 343. | 0.1% | Panther Valley, NJ / 3,376 |
| 349. | 0.1% | Glen Rock, NJ / 11,784 |
| 349. | 0.1% | Atlantic City, NJ / 39,521 |
| 351. | 0.1% | Paterson, NJ / 146,341 |
| 351. | 0.1% | Roselle, NJ / 21,348 |
| 353. | 0.0% | Camden, NJ / 77,294 |
| 353. | 0.0% | Elizabeth, NJ / 126,964 |
| 355. | 0.0% | Gloucester City, NJ / 11,392 |
| 355. | 0.0% | Union City, NJ / 68,001 |
| 357. | 0.0% | Newark, NJ / 278,750 |
| 357. | 0.0% | Bellmawr, NJ / 11,538 |
| 359. | 0.0% | East Orange, NJ / 64,538 |
Please note that we only rank locations with 'Czech as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Czech as First Ancestry Population Percentage' data are not listed.