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Jefferson County Historical First Ancestry Data

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ACS 2010-2014 data

21,804 (81.91%) out of the total population of 26,620 reported first ancestry.

	Jefferson County	% of the Total Population	Idaho	U.S.
Arab	0	0.00%, see rank	0.13%	0.56%
Czech	9	0.03%, see rank	0.42%	0.47%
Danish	1,109	4.17%, see rank	2.07%	0.42%
Dutch	444	1.67%, see rank	2.05%	1.40%
English	6,351	23.86%, see rank	15.96%	8.02%
French	726	2.73%, see rank	3.11%	3.34%
German	3,531	13.26%, see rank	18.13%	15.03%
Greek	149	0.56%, see rank	0.25%	0.41%
Hungarian	19	0.07%, see rank	0.19%	0.46%
Irish	1,600	6.01%, see rank	9.45%	10.80%
Italian	513	1.93%, see rank	3.14%	5.52%
Norwegian	729	2.74%, see rank	3.17%	1.42%
Polish	206	0.77%, see rank	1.26%	3.01%
Portuguese	42	0.16%, see rank	0.41%	0.44%
Russian	37	0.14%, see rank	0.52%	0.92%
Scotch-Irish	94	0.35%, see rank	1.08%	0.99%
Scottish	852	3.20%, see rank	3.07%	1.72%
Subsaharan African	19	0.07%, see rank	0.19%	0.95%
Swedish	856	3.22%, see rank	2.78%	1.27%
Swiss	210	0.79%, see rank	0.73%	0.30%
Ukrainian	0	0.00%, see rank	0.14%	0.31%
American	2,933	11.02%, see rank	9.60%	7.12%
Welsh	330	1.24%, see rank	1.30%	0.57%

ACS 2008-2012 data

22,019 (84.88%) out of the total population of 25,940 reported first ancestry.

	Jefferson County	% of the Total Population	Idaho	U.S.
Arab	0	0.00%, see rank	0.13%	0.53%
Czech	39	0.15%, see rank	0.42%	0.50%
Danish	1,358	5.24%, see rank	2.26%	0.45%
Dutch	451	1.74%, see rank	2.28%	1.51%
English	7,676	29.59%, see rank	16.47%	8.53%
French	677	2.61%, see rank	3.39%	3.54%
German	3,600	13.88%, see rank	19.06%	15.79%
Greek	100	0.39%, see rank	0.29%	0.42%
Hungarian	30	0.12%, see rank	0.22%	0.48%
Irish	1,608	6.20%, see rank	10.16%	11.36%
Italian	424	1.63%, see rank	3.15%	5.66%
Norwegian	680	2.62%, see rank	3.23%	1.46%
Polish	85	0.33%, see rank	1.32%	3.13%
Portuguese	81	0.31%, see rank	0.49%	0.46%
Russian	44	0.17%, see rank	0.60%	0.97%
Scotch-Irish	76	0.29%, see rank	1.23%	1.07%
Scottish	933	3.60%, see rank	3.16%	1.81%
Subsaharan African	0	0.00%, see rank	0.15%	0.93%
Swedish	1,307	5.04%, see rank	3.04%	1.34%
Swiss	187	0.72%, see rank	0.74%	0.31%
Ukrainian	0	0.00%, see rank	0.15%	0.31%
American	2,242	8.64%, see rank	10.21%	6.72%
Welsh	431	1.66%, see rank	1.37%	0.60%

ACS 2006-2010 data

20,911 (85.27%) out of the total population of 24,523 reported first ancestry.

	Jefferson County	% of the Total Population	Idaho	U.S.
Arab	0	0.00%, see rank	0.12%	0.50%
Czech	59	0.24%, see rank	0.53%	0.53%
Danish	1,444	5.89%, see rank	2.43%	0.48%
Dutch	574	2.34%, see rank	2.39%	1.63%
English	7,694	31.37%, see rank	17.66%	9.02%
French	322	1.31%, see rank	3.65%	3.77%
German	3,418	13.94%, see rank	20.30%	16.51%
Greek	54	0.22%, see rank	0.31%	0.44%
Hungarian	31	0.13%, see rank	0.26%	0.51%
Irish	1,299	5.30%, see rank	10.82%	11.76%
Italian	326	1.33%, see rank	3.04%	5.78%
Norwegian	839	3.42%, see rank	3.48%	1.51%
Polish	40	0.16%, see rank	1.35%	3.24%
Portuguese	92	0.38%, see rank	0.52%	0.47%
Russian	74	0.30%, see rank	0.61%	1.01%
Scotch-Irish	140	0.57%, see rank	2.01%	1.72%
Scottish	843	3.44%, see rank	3.43%	1.92%
Subsaharan African	0	0.00%, see rank	0.19%	0.91%
Swedish	1,212	4.94%, see rank	3.40%	1.41%
Swiss	274	1.12%, see rank	0.84%	0.33%
Ukrainian	0	0.00%, see rank	0.18%	0.31%
American	2,019	8.23%, see rank	9.77%	6.28%
Welsh	399	1.63%, see rank	1.47%	0.63%

ACS 2005-2009 data

19,352 (84.54%) out of the total population of 22,892 reported first ancestry.

	Jefferson County	% of the Total Population	Idaho	U.S.
Arab	9	0.04%, see rank	0.14%	0.50%
Czech	72	0.31%, see rank	0.51%	0.54%
Danish	1,496	6.54%, see rank	2.43%	0.49%
Dutch	386	1.69%, see rank	2.47%	1.68%
English	6,886	30.08%, see rank	18.16%	9.29%
French	400	1.75%, see rank	3.84%	3.90%
German	3,575	15.62%, see rank	21.19%	16.89%
Greek	13	0.06%, see rank	0.30%	0.45%
Hungarian	23	0.10%, see rank	0.25%	0.52%
Irish	1,258	5.50%, see rank	11.13%	12.01%
Italian	328	1.43%, see rank	3.06%	5.91%
Norwegian	593	2.59%, see rank	3.39%	1.55%
Polish	60	0.26%, see rank	1.41%	3.32%
Portuguese	89	0.39%, see rank	0.54%	0.48%
Russian	64	0.28%, see rank	0.58%	1.04%
Scotch-Irish	181	0.79%, see rank	2.07%	1.77%
Scottish	776	3.39%, see rank	3.48%	1.97%
Subsaharan African	0	0.00%, see rank	0.19%	0.88%
Swedish	1,258	5.50%, see rank	3.51%	1.45%
Swiss	247	1.08%, see rank	0.90%	0.34%
Ukrainian	0	0.00%, see rank	0.19%	0.32%
American	2,029	8.86%, see rank	9.56%	6.43%
Welsh	334	1.46%, see rank	1.61%	0.65%

US Census 2000 data

14,417 (75.26%) out of the total population of 19,155 reported first ancestry.

	Jefferson County	% of the Total Population	Idaho	U.S.
Arab	0	0.00%, see rank	0.09%	0.36%
Czech	57	0.30%, see rank	0.26%	0.27%
Danish	529	2.76%, see rank	1.64%	0.30%
Dutch	203	1.06%, see rank	1.40%	0.91%
English	4,717	24.63%, see rank	13.06%	5.91%
French	227	1.19%, see rank	2.13%	2.39%
German	1,586	8.28%, see rank	13.37%	10.81%
Greek	10	0.05%, see rank	0.18%	0.34%
Hungarian	19	0.10%, see rank	0.15%	0.32%
Irish	566	2.95%, see rank	5.94%	6.85%
Italian	194	1.01%, see rank	2.05%	4.59%
Norwegian	397	2.07%, see rank	2.68%	1.15%
Polish	66	0.34%, see rank	0.73%	2.24%
Portuguese	17	0.09%, see rank	0.24%	0.33%
Russian	31	0.16%, see rank	0.27%	0.68%
Scotch-Irish	136	0.71%, see rank	1.31%	1.17%
Scottish	557	2.91%, see rank	1.96%	1.12%
Subsaharan African	0	0.00%, see rank	0.05%	0.61%
Swedish	576	3.01%, see rank	2.22%	0.87%
Swiss	202	1.05%, see rank	0.57%	0.19%
Ukrainian	5	0.03%, see rank	0.11%	0.24%
American	1,333	6.96%, see rank	8.35%	7.33%
Welsh	90	0.47%, see rank	0.79%	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.