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Montgomery County Historical First Ancestry Data

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ACS 2010-2014 data

19,435 (65.35%) out of the total population of 29,740 reported first ancestry.

	Montgomery County	% of the Total Population	Illinois	U.S.
Arab	1	0.00%, see rank	0.71%	0.56%
Czech	69	0.23%, see rank	0.92%	0.47%
Danish	15	0.05%, see rank	0.38%	0.42%
Dutch	467	1.57%, see rank	1.37%	1.40%
English	2,205	7.41%, see rank	5.90%	8.02%
French	777	2.61%, see rank	2.13%	3.34%
German	6,609	22.22%, see rank	19.07%	15.03%
Greek	42	0.14%, see rank	0.76%	0.41%
Hungarian	48	0.16%, see rank	0.40%	0.46%
Irish	2,466	8.29%, see rank	12.00%	10.80%
Italian	1,285	4.32%, see rank	6.14%	5.52%
Norwegian	39	0.13%, see rank	1.25%	1.42%
Polish	451	1.52%, see rank	7.22%	3.01%
Portuguese	70	0.24%, see rank	0.08%	0.44%
Russian	80	0.27%, see rank	0.97%	0.92%
Scotch-Irish	305	1.03%, see rank	0.59%	0.99%
Scottish	302	1.02%, see rank	1.16%	1.72%
Subsaharan African	33	0.11%, see rank	0.64%	0.95%
Swedish	148	0.50%, see rank	2.13%	1.27%
Swiss	107	0.36%, see rank	0.27%	0.30%
Ukrainian	3	0.01%, see rank	0.40%	0.31%
American	2,825	9.50%, see rank	5.00%	7.12%
Welsh	49	0.16%, see rank	0.37%	0.57%

ACS 2008-2012 data

19,545 (65.20%) out of the total population of 29,977 reported first ancestry.

	Montgomery County	% of the Total Population	Illinois	U.S.
Arab	0	0.00%, see rank	0.64%	0.53%
Czech	199	0.66%, see rank	0.96%	0.50%
Danish	16	0.05%, see rank	0.40%	0.45%
Dutch	443	1.48%, see rank	1.46%	1.51%
English	2,611	8.71%, see rank	6.23%	8.53%
French	666	2.22%, see rank	2.26%	3.54%
German	7,329	24.45%, see rank	19.89%	15.79%
Greek	38	0.13%, see rank	0.78%	0.42%
Hungarian	89	0.30%, see rank	0.41%	0.48%
Irish	2,821	9.41%, see rank	12.52%	11.36%
Italian	1,081	3.61%, see rank	6.29%	5.66%
Norwegian	60	0.20%, see rank	1.30%	1.46%
Polish	521	1.74%, see rank	7.47%	3.13%
Portuguese	0	0.00%, see rank	0.08%	0.46%
Russian	93	0.31%, see rank	1.03%	0.97%
Scotch-Irish	233	0.78%, see rank	0.65%	1.07%
Scottish	283	0.94%, see rank	1.20%	1.81%
Subsaharan African	60	0.20%, see rank	0.62%	0.93%
Swedish	182	0.61%, see rank	2.24%	1.34%
Swiss	81	0.27%, see rank	0.29%	0.31%
Ukrainian	2	0.01%, see rank	0.40%	0.31%
American	2,393	7.98%, see rank	4.85%	6.72%
Welsh	87	0.29%, see rank	0.40%	0.60%

ACS 2006-2010 data

20,122 (66.56%) out of the total population of 30,230 reported first ancestry.

	Montgomery County	% of the Total Population	Illinois	U.S.
Arab	0	0.00%, see rank	0.55%	0.50%
Czech	214	0.71%, see rank	1.01%	0.53%
Danish	13	0.04%, see rank	0.42%	0.48%
Dutch	697	2.31%, see rank	1.58%	1.63%
English	3,050	10.09%, see rank	6.56%	9.02%
French	656	2.17%, see rank	2.43%	3.77%
German	8,395	27.77%, see rank	20.72%	16.51%
Greek	25	0.08%, see rank	0.83%	0.44%
Hungarian	104	0.34%, see rank	0.43%	0.51%
Irish	3,381	11.18%, see rank	12.94%	11.76%
Italian	1,103	3.65%, see rank	6.35%	5.78%
Norwegian	102	0.34%, see rank	1.36%	1.51%
Polish	478	1.58%, see rank	7.69%	3.24%
Portuguese	0	0.00%, see rank	0.08%	0.47%
Russian	69	0.23%, see rank	1.07%	1.01%
Scotch-Irish	509	1.68%, see rank	1.12%	1.72%
Scottish	375	1.24%, see rank	1.26%	1.92%
Subsaharan African	35	0.12%, see rank	0.63%	0.91%
Swedish	174	0.58%, see rank	2.37%	1.41%
Swiss	39	0.13%, see rank	0.33%	0.33%
Ukrainian	0	0.00%, see rank	0.40%	0.31%
American	2,975	9.84%, see rank	4.61%	6.28%
Welsh	89	0.29%, see rank	0.41%	0.63%

ACS 2005-2009 data

20,368 (68.39%) out of the total population of 29,782 reported first ancestry.

	Montgomery County	% of the Total Population	Illinois	U.S.
Arab	0	0.00%, see rank	0.52%	0.50%
Czech	236	0.79%, see rank	1.02%	0.54%
Danish	34	0.11%, see rank	0.44%	0.49%
Dutch	609	2.04%, see rank	1.61%	1.68%
English	3,127	10.50%, see rank	6.71%	9.29%
French	687	2.31%, see rank	2.51%	3.90%
German	8,285	27.82%, see rank	21.16%	16.89%
Greek	12	0.04%, see rank	0.85%	0.45%
Hungarian	90	0.30%, see rank	0.45%	0.52%
Irish	3,404	11.43%, see rank	13.14%	12.01%
Italian	1,173	3.94%, see rank	6.45%	5.91%
Norwegian	90	0.30%, see rank	1.38%	1.55%
Polish	524	1.76%, see rank	7.85%	3.32%
Portuguese	5	0.02%, see rank	0.07%	0.48%
Russian	73	0.25%, see rank	1.11%	1.04%
Scotch-Irish	549	1.84%, see rank	1.15%	1.77%
Scottish	417	1.40%, see rank	1.31%	1.97%
Subsaharan African	42	0.14%, see rank	0.62%	0.88%
Swedish	157	0.53%, see rank	2.46%	1.45%
Swiss	44	0.15%, see rank	0.33%	0.34%
Ukrainian	0	0.00%, see rank	0.40%	0.32%
American	2,891	9.71%, see rank	4.55%	6.43%
Welsh	186	0.62%, see rank	0.42%	0.65%

US Census 2000 data

18,984 (61.93%) out of the total population of 30,652 reported first ancestry.

	Montgomery County	% of the Total Population	Illinois	U.S.
Arab	10	0.03%, see rank	0.38%	0.36%
Czech	77	0.25%, see rank	0.57%	0.27%
Danish	34	0.11%, see rank	0.26%	0.30%
Dutch	215	0.70%, see rank	0.90%	0.91%
English	2,399	7.83%, see rank	4.12%	5.91%
French	429	1.40%, see rank	1.34%	2.39%
German	6,394	20.86%, see rank	13.82%	10.81%
Greek	35	0.11%, see rank	0.65%	0.34%
Hungarian	19	0.06%, see rank	0.27%	0.32%
Irish	1,753	5.72%, see rank	7.62%	6.85%
Italian	846	2.76%, see rank	4.81%	4.59%
Norwegian	87	0.28%, see rank	0.96%	1.15%
Polish	312	1.02%, see rank	5.68%	2.24%
Portuguese	10	0.03%, see rank	0.04%	0.33%
Russian	6	0.02%, see rank	0.72%	0.68%
Scotch-Irish	344	1.12%, see rank	0.73%	1.17%
Scottish	284	0.93%, see rank	0.73%	1.12%
Subsaharan African	4	0.01%, see rank	0.57%	0.61%
Swedish	52	0.17%, see rank	1.52%	0.87%
Swiss	32	0.10%, see rank	0.17%	0.19%
Ukrainian	20	0.07%, see rank	0.30%	0.24%
American	3,659	11.94%, see rank	4.58%	7.33%
Welsh	62	0.20%, see rank	0.20%	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.