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Johnson County Auditor
Commissioner of Elections
and Voter Registration


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Tom Slockett, Auditor

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Voter Statistics

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Voter Registration Statistics by Age, Gender and Party

Updated through August 11, 2010
County Total: 87,614

Dem 40,341 (46.04%)

Rep 17,573 (20.06%)

Green 70 (0.08%) Libertarian 135 (0.15%)

None 29,495 (33.66%)

Voter Registration Statistics Main Page

County Wide Totals

Age Dem F Dem M Dem Tot Rep F Rep M Rep Tot Green F Green M Green Tot Libt F Libt M Libt Tot None F None M None Tot F Tot M Tot TOTAL %D %R %N
18-24 4,338 3,226 7,564 1,565 1,858 3,423 14 20 34 25 55 80 4,102 4,105 8,207 10,044 9,264 19,308 39.18% 17.73% 42.51%
25-29 2,819 2,290 5,109 839 1,118 1,957 5 10 15 6 18 24 2,477 2,602 5,079 6,146 6,038 12,184 41.93% 16.06% 41.69%
30-49 6,768 5,178 11,946 2,320 3,044 5,364 6 6 12 9 14 23 4,651 4,956 9,607 13,754 13,198 26,952 44.32% 19.90% 35.64%
50-64 5,746 4,347 10,093 1,768 2,159 3,927 4 5 9 0 6 6 2,356 2,469 4,825 9,874 8,986 18,860 53.52% 20.82% 25.58%
65+ 3,276 2,353 5,629 1,547 1,355 2,902 1 1 2 0 0 0 935 842 1,777 5,759 4,551 10,310 54.60% 28.15% 17.24%
TOTAL 22,947 17,394 40,341 8,039 9,534 17,573 30 42 72 40 93 133 14,521 14,974 29,495 45,577 42,037 87,614 46.04% 20.06% 33.66%

Iowa City Only

Iowa City age statistics

Age Dem F Dem M Dem Tot Rep F Rep M Rep Tot Green F Green M Green Tot Libt F Libt M Libt Tot None F None M None Tot F Tot M Tot TOTAL %D %R %N
18-24 3,513 2,554 6,067 1,199 1,369 2,568 13 17 30 20 52 72 3,235 3,312 6,547 7,980 7,304 15,284 39.70% 16.80% 42.84%
25-29 1,677 1,483 3,160 404 633 1,037 5 7 12 4 13 17 1,370 1,600 2,970 3,460 3,736 7,196 43.91% 14.41% 41.27%
30-49 3,407 2,685 6,092 742 1,019 1,761 2 2 4 2 10 12 1,727 2,115 3,842 5,880 5,831 11,711 52.02% 15.04% 32.81%
50-64 2,852 2,162 5,014 650 751 1,401 3 3 6 0 3 3 877 980 1,857 4,382 3,899 8,281 60.55% 16.92% 22.42%
65+ 1,783 1,180 2,963 816 646 1,462 1 1 2 0 0 0 448 382 830 3,048 2,209 5,257 56.36% 27.81% 15.79%
TOTAL 13,232 10,064 23,296 3,811 4,418 8,229 24 30 54 26 78 104 7,657 8,389 16,046 24,750 22,979 47,729 48.81% 17.24% 33.62%

Note: Statistics by age may not exactly match other voter registration statistics, as the reports are run at slightly different times and activity on the statewide voter registration system is constant.


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Please e-mail questions or comments to Auditor@pobox.com.
Phone: (319) 356-6004 FAX: (319) 356-6086
Mailing address: 913 S. Dubuque St., Suite 101, Iowa City, IA 52240