2021 Odd-Year Election Turnout

Calculated as a percentage of active voters

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County	Active voters	Ballots cast	Turnout %
Adams	299,237	92,751	31.00%
Alamosa	9,794	3,929	40.12%
Arapahoe	419,311	157,299	37.51%
Archuleta	11,181	4,412	39.46%
Baca	2,663	1,308	49.12%
Bent	2,875	1,269	44.14%
Boulder	231,109	109,366	47.32%
Broomfield	52,742	24,428	46.32%
Chaffee	15,760	8,299	52.66%
Cheyenne	1,293	652	50.43%
Clear Creek	7,736	3,421	44.22%
Conejos	5,273	2,566	48.66%
Costilla	2,796	1,204	43.06%
Crowley	2,185	932	42.65%
Custer	4,313	2,518	58.38%
Delta	22,900	10,070	43.97%
Denver	467,266	166,859	35.71%
Dolores	1,689	855	50.62%
Douglas	266,381	126,480	47.48%
Eagle	35,076	15,583	44.43%
El Paso	475,010	171,062	36.01%
Elbert	21,944	9,863	44.95%
Fremont	31,021	14,808	47.74%
Garfield	37,648	15,439	41.01%
Gilpin	4,919	1,990	40.46%
Grand	11,994	5,503	45.88%
Gunnison	12,862	5,919	46.02%
Hinsdale	702	439	62.54%
Huerfano	5,406	2,683	49.63%
Jackson	1,029	544	52.87%
Jefferson	429,303	185,520	43.21%
Kiowa	1,010	590	58.42%
Kit Carson	4,652	2,058	44.24%
La Plata	42,456	18,051	42.52%
Lake	5,055	1,950	38.58%
Larimer	259,693	112,785	43.43%
Las Animas	10,320	4,152	40.23%
Lincoln	3,152	1,552	49.24%
Logan	12,405	5,883	47.42%
Mesa	108,287	52,472	48.46%
Mineral	874	597	68.31%
Moffat	8,717	3,833	43.97%
Montezuma	18,995	7,800	41.06%
Montrose	29,776	13,886	46.63%
Morgan	17,371	7,356	42.35%
Otero	12,313	5,422	44.03%
Ouray	4,592	2,648	57.67%
Park	14,698	6,676	45.42%
Phillips	2,867	1,430	49.88%
Pitkin	13,957	5,570	39.91%
Prowers	7,150	3,547	49.61%
Pueblo	112,485	37,675	33.49%
Rio Blanco	4,381	2,216	50.58%
Rio Grande	7,831	3,322	42.42%
Routt	19,783	9,567	48.36%
Saguache	4,443	1,800	40.51%
San Juan	719	384	53.41%
San Miguel	6,111	2,803	45.87%
Sedgwick	1,714	909	53.03%
Summit	22,064	9,216	41.77%
Teller	19,462	8,972	46.10%
Washington	3,379	1,576	46.64%
Weld	208,739	69,095	33.10%
Yuma	5,849	2,983	51.00%
Total	3,888,718	1,556,747	40.03%

Calculated as a percentage of registered voters

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County	Active voters	Ballots cast	Turnout %
Adams	319,988	92,751	28.99%
Alamosa	10,833	3,929	36.27%
Arapahoe	453,061	157,299	34.72%
Archuleta	12,286	4,412	35.91%
Baca	2,805	1,308	46.63%
Bent	3,145	1,269	40.35%
Boulder	247,793	109,366	44.14%
Broomfield	56,535	24,428	43.21%
Chaffee	17,162	8,299	48.36%
Cheyenne	1,358	652	48.01%
Clear Creek	8,357	3,421	40.94%
Conejos	5,629	2,566	45.59%
Costilla	3,029	1,204	39.75%
Crowley	2,354	932	39.59%
Custer	4,621	2,518	54.49%
Delta	23,988	10,070	41.98%
Denver	508,549	166,859	32.81%
Dolores	1,791	855	47.74%
Douglas	280,093	126,480	45.16%
Eagle	37,460	15,583	41.60%
El Paso	514,746	171,062	33.23%
Elbert	23,091	9,863	42.71%
Fremont	32,859	14,808	45.07%
Garfield	40,341	15,439	38.27%
Gilpin	5,791	1,990	34.36%
Grand	13,054	5,503	42.16%
Gunnison	14,236	5,919	41.58%
Hinsdale	719	439	61.06%
Huerfano	5,825	2,683	46.06%
Jackson	1,083	544	50.23%
Jefferson	451,629	185,520	41.08%
Kiowa	1,077	590	54.78%
Kit Carson	5,000	2,058	41.16%
La Plata	48,049	18,051	37.57%
Lake	5,822	1,950	33.49%
Larimer	277,618	112,785	40.63%
Las Animas	11,699	4,152	35.49%
Lincoln	3,436	1,552	45.17%
Logan	13,089	5,883	44.95%
Mesa	118,099	52,472	44.43%
Mineral	963	597	61.99%
Moffat	9,533	3,833	40.21%
Montezuma	21,166	7,800	36.85%
Montrose	31,580	13,886	43.97%
Morgan	18,307	7,356	40.18%
Otero	13,188	5,422	41.11%
Ouray	4,839	2,648	54.72%
Park	16,186	6,676	41.25%
Phillips	2,990	1,430	47.83%
Pitkin	14,865	5,570	37.47%
Prowers	7,678	3,547	46.20%
Pueblo	118,984	37,675	31.66%
Rio Blanco	4,761	2,216	46.54%
Rio Grande	8,633	3,322	38.48%
Routt	21,300	9,567	44.92%
Saguache	4,817	1,800	37.37%
San Juan	781	384	49.17%
San Miguel	6,597	2,803	42.49%
Sedgwick	1,847	909	49.21%
Summit	24,833	9,216	37.11%
Teller	21,362	8,972	42.00%
Washington	3,526	1,576	44.70%
Weld	220,638	69,095	31.32%
Yuma	6,091	2,983	48.97%
Total	4,173,565	1,556,747	37.30%