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Loudoun County Historical First Ancestry Data

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ACS 2010-2014 data

300,576 (88.69%) out of the total population of 338,916 reported first ancestry.

	Loudoun County	% of the Total Population	Virginia	U.S.
Arab	4,612	1.36%, see rank	0.83%	0.56%
Czech	1,605	0.47%, see rank	0.28%	0.47%
Danish	1,138	0.34%, see rank	0.23%	0.42%
Dutch	3,826	1.13%, see rank	1.00%	1.40%
English	33,622	9.92%, see rank	10.69%	8.02%
French	9,959	2.94%, see rank	2.33%	3.34%
German	46,743	13.79%, see rank	11.87%	15.03%
Greek	1,639	0.48%, see rank	0.41%	0.41%
Hungarian	1,814	0.54%, see rank	0.35%	0.46%
Irish	40,086	11.83%, see rank	9.99%	10.80%
Italian	22,144	6.53%, see rank	4.00%	5.52%
Norwegian	2,674	0.79%, see rank	0.61%	1.42%
Polish	9,682	2.86%, see rank	1.89%	3.01%
Portuguese	1,426	0.42%, see rank	0.20%	0.44%
Russian	3,582	1.06%, see rank	0.70%	0.92%
Scotch-Irish	4,774	1.41%, see rank	1.68%	0.99%
Scottish	7,916	2.34%, see rank	2.13%	1.72%
Subsaharan African	6,494	1.92%, see rank	2.02%	0.95%
Swedish	4,236	1.25%, see rank	0.71%	1.27%
Swiss	1,117	0.33%, see rank	0.24%	0.30%
Ukrainian	1,345	0.40%, see rank	0.23%	0.31%
American	17,947	5.30%, see rank	11.04%	7.12%
Welsh	2,818	0.83%, see rank	0.65%	0.57%

ACS 2008-2012 data

287,290 (91.21%) out of the total population of 314,980 reported first ancestry.

	Loudoun County	% of the Total Population	Virginia	U.S.
Arab	3,549	1.13%, see rank	0.75%	0.53%
Czech	1,475	0.47%, see rank	0.29%	0.50%
Danish	1,141	0.36%, see rank	0.24%	0.45%
Dutch	3,671	1.17%, see rank	1.05%	1.51%
English	32,766	10.40%, see rank	11.31%	8.53%
French	9,924	3.15%, see rank	2.44%	3.54%
German	48,398	15.37%, see rank	12.33%	15.79%
Greek	1,758	0.56%, see rank	0.44%	0.42%
Hungarian	1,698	0.54%, see rank	0.36%	0.48%
Irish	40,711	12.92%, see rank	10.45%	11.36%
Italian	21,734	6.90%, see rank	4.05%	5.66%
Norwegian	3,036	0.96%, see rank	0.62%	1.46%
Polish	9,732	3.09%, see rank	1.95%	3.13%
Portuguese	1,012	0.32%, see rank	0.20%	0.46%
Russian	3,325	1.06%, see rank	0.70%	0.97%
Scotch-Irish	4,055	1.29%, see rank	1.78%	1.07%
Scottish	7,250	2.30%, see rank	2.30%	1.81%
Subsaharan African	6,447	2.05%, see rank	2.05%	0.93%
Swedish	3,775	1.20%, see rank	0.74%	1.34%
Swiss	995	0.32%, see rank	0.26%	0.31%
Ukrainian	1,147	0.36%, see rank	0.24%	0.31%
American	16,208	5.15%, see rank	11.02%	6.72%
Welsh	2,733	0.87%, see rank	0.70%	0.60%

ACS 2006-2010 data

268,797 (92.16%) out of the total population of 291,653 reported first ancestry.

	Loudoun County	% of the Total Population	Virginia	U.S.
Arab	3,037	1.04%, see rank	0.65%	0.50%
Czech	1,356	0.46%, see rank	0.32%	0.53%
Danish	877	0.30%, see rank	0.25%	0.48%
Dutch	3,840	1.32%, see rank	1.16%	1.63%
English	35,469	12.16%, see rank	11.75%	9.02%
French	9,200	3.15%, see rank	2.54%	3.77%
German	46,019	15.78%, see rank	12.95%	16.51%
Greek	1,869	0.64%, see rank	0.44%	0.44%
Hungarian	1,892	0.65%, see rank	0.38%	0.51%
Irish	38,591	13.23%, see rank	10.78%	11.76%
Italian	20,655	7.08%, see rank	4.05%	5.78%
Norwegian	3,223	1.11%, see rank	0.65%	1.51%
Polish	10,072	3.45%, see rank	1.98%	3.24%
Portuguese	733	0.25%, see rank	0.19%	0.47%
Russian	3,104	1.06%, see rank	0.70%	1.01%
Scotch-Irish	6,523	2.24%, see rank	2.57%	1.72%
Scottish	7,421	2.54%, see rank	2.41%	1.92%
Subsaharan African	4,292	1.47%, see rank	2.00%	0.91%
Swedish	3,499	1.20%, see rank	0.77%	1.41%
Swiss	805	0.28%, see rank	0.27%	0.33%
Ukrainian	1,340	0.46%, see rank	0.24%	0.31%
American	13,779	4.72%, see rank	10.65%	6.28%
Welsh	2,710	0.93%, see rank	0.74%	0.63%

ACS 2005-2009 data

256,652 (92.50%) out of the total population of 277,465 reported first ancestry.

	Loudoun County	% of the Total Population	Virginia	U.S.
Arab	3,468	1.25%, see rank	0.66%	0.50%
Czech	1,289	0.46%, see rank	0.31%	0.54%
Danish	1,004	0.36%, see rank	0.27%	0.49%
Dutch	3,872	1.40%, see rank	1.24%	1.68%
English	34,425	12.41%, see rank	12.05%	9.29%
French	9,146	3.30%, see rank	2.64%	3.90%
German	46,746	16.85%, see rank	13.25%	16.89%
Greek	2,126	0.77%, see rank	0.44%	0.45%
Hungarian	1,968	0.71%, see rank	0.38%	0.52%
Irish	39,365	14.19%, see rank	11.09%	12.01%
Italian	20,209	7.28%, see rank	4.17%	5.91%
Norwegian	3,174	1.14%, see rank	0.66%	1.55%
Polish	10,266	3.70%, see rank	2.01%	3.32%
Portuguese	712	0.26%, see rank	0.20%	0.48%
Russian	3,282	1.18%, see rank	0.71%	1.04%
Scotch-Irish	6,749	2.43%, see rank	2.67%	1.77%
Scottish	7,475	2.69%, see rank	2.52%	1.97%
Subsaharan African	3,705	1.34%, see rank	1.88%	0.88%
Swedish	3,437	1.24%, see rank	0.78%	1.45%
Swiss	1,148	0.41%, see rank	0.27%	0.34%
Ukrainian	1,484	0.53%, see rank	0.25%	0.32%
American	14,061	5.07%, see rank	10.83%	6.43%
Welsh	2,663	0.96%, see rank	0.74%	0.65%

US Census 2000 data

143,347 (84.52%) out of the total population of 169,599 reported first ancestry.

	Loudoun County	% of the Total Population	Virginia	U.S.
Arab	1,200	0.71%, see rank	0.53%	0.36%
Czech	328	0.19%, see rank	0.14%	0.27%
Danish	372	0.22%, see rank	0.15%	0.30%
Dutch	1,134	0.67%, see rank	0.64%	0.91%
English	15,570	9.18%, see rank	8.34%	5.91%
French	3,461	2.04%, see rank	1.56%	2.39%
German	21,496	12.67%, see rank	7.93%	10.81%
Greek	900	0.53%, see rank	0.30%	0.34%
Hungarian	734	0.43%, see rank	0.23%	0.32%
Irish	16,879	9.95%, see rank	6.46%	6.85%
Italian	9,509	5.61%, see rank	2.87%	4.59%
Norwegian	1,310	0.77%, see rank	0.48%	1.15%
Polish	3,627	2.14%, see rank	1.17%	2.24%
Portuguese	341	0.20%, see rank	0.13%	0.33%
Russian	1,318	0.78%, see rank	0.45%	0.68%
Scotch-Irish	2,963	1.75%, see rank	1.75%	1.17%
Scottish	3,477	2.05%, see rank	1.43%	1.12%
Subsaharan African	1,175	0.69%, see rank	0.96%	0.61%
Swedish	1,142	0.67%, see rank	0.44%	0.87%
Swiss	461	0.27%, see rank	0.16%	0.19%
Ukrainian	388	0.23%, see rank	0.15%	0.24%
American	12,835	7.57%, see rank	11.42%	7.33%
Welsh	1,117	0.66%, see rank	0.38%	0.31%

* 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.