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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 March 4, 2010
County Total: 86,114

Dem 40,418 (46.94%)

Rep 16,210 (18.82%)

Green 70 (0.08%) Libertarian 119 (0.14%)

None 29,297 (34.02%)

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 4,480 3,368 7,848 1,528 1,828 3,356 13 17 30 20 55 75 4,083 4,084 8,167 10,124 9,352 19,476 40.30% 17.23% 41.93%
25-29 2,749 2,178 4,927 775 1,043 1,818 5 9 14 6 15 21 2,329 2,450 4,779 5,864 5,695 11,559 42.62% 15.73% 41.34%
30-49 6,689 5,109 11,798 2,201 2,862 5,063 7 8 15 7 11 18 4,595 4,941 9,536 13,499 12,931 26,430 44.64% 19.16% 36.08%
50-64 5,743 4,418 10,161 1,577 1,897 3,474 4 5 9 1 4 5 2,386 2,546 4,932 9,711 8,870 18,581 54.68% 18.70% 26.54%
65+ 3,296 2,386 5,682 1,360 1,138 2,498 1 1 2 0 0 0 995 888 1,883 5,652 4,413 10,065 56.45% 24.82% 18.71%
TOTAL 22,957 17,459 40,416 7,441 8,768 16,209 30 40 70 34 85 119 14,388 14,909 29,297 44,850 41,261 86,111 46.93% 18.82% 34.02%

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 3,601 2,669 6,270 1,169 1,353 2,522 12 15 27 15 52 67 3,201 3,280 6,481 7,998 7,369 15,367 40.80% 16.41% 42.17%
25-29 1,631 1,375 3,006 364 574 938 5 6 11 4 13 17 1,267 1,455 2,722 3,271 3,423 6,694 44.91% 14.01% 40.66%
30-49 3,363 2,660 6,023 711 965 1,676 2 3 5 1 7 8 1,674 2,049 3,723 5,751 5,684 11,435 52.67% 14.66% 32.56%
50-64 2,860 2,195 5,055 569 667 1,236 3 4 7 0 3 3 896 1,010 1,906 4,328 3,879 8,207 61.59% 15.06% 23.22%
65+ 1,806 1,184 2,990 730 547 1,277 1 1 2 0 0 0 482 417 899 3,019 2,149 5,168 57.86% 24.71% 17.40%
TOTAL 13,261 10,083 23,344 3,543 4,106 7,649 23 29 52 20 75 95 7,520 8,211 15,731 24,367 22,504 46,871 49.80% 16.32% 33.56%

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