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Dewey County Historical Age Data

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ACS 2010-2014 data

Total population: 5,510

Median Age (see rank)

Dewey County	28.90 years old
South Dakota	36.80 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Dewey County	27.20 years old
South Dakota	35.60 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Dewey County	30.20 years old
South Dakota	38.20 years old
U.S.	38.80 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	597	10.83%, see rank	7.10%	6.36%
5 to 9 years	588	10.67%, see rank	6.91%	6.51%
10 to 14 years	471	8.55%, see rank	6.64%	6.59%
15 to 19 years	445	8.08%, see rank	6.95%	6.85%
20 to 24 years	383	6.95%, see rank	7.15%	7.13%
25 to 34 years	676	12.27%, see rank	13.12%	13.47%
35 to 44 years	592	10.74%, see rank	11.34%	12.96%
45 to 54 years	714	12.96%, see rank	13.41%	14.09%
55 to 64 years	505	9.17%, see rank	12.72%	12.29%
65 to 74 years	337	6.12%, see rank	7.51%	7.64%
75 to 84	153	2.78%, see rank	4.78%	4.25%
85 years and over	49	0.89%, see rank	2.36%	1.85%

US Census 2010 data

Total population: 5,301

Median Age (see rank)

Dewey County	30.00 years old
South Dakota	36.90 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Dewey County	29.30 years old
South Dakota	35.60 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Dewey County	30.90 years old
South Dakota	38.20 years old
U.S.	38.50 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	504	9.51%, see rank	7.32%	6.54%
5 to 9 years	489	9.22%, see rank	6.82%	6.59%
10 to 14 years	497	9.38%, see rank	6.63%	6.70%
15 to 19 years	509	9.60%, see rank	7.08%	7.14%
20 to 24 years	334	6.30%, see rank	7.07%	6.99%
25 to 34 years	620	11.70%, see rank	12.95%	13.30%
35 to 44 years	620	11.70%, see rank	11.44%	13.30%
45 to 54 years	733	13.83%, see rank	14.36%	14.58%
55 to 64 years	480	9.05%, see rank	12.01%	11.82%
65 to 74 years	301	5.68%, see rank	7.08%	7.03%
75 to 84	156	2.94%, see rank	4.88%	4.23%
85 years and over	58	1.09%, see rank	2.36%	1.78%

ACS 2008-2012 data

Total population: 5,358

Median Age (see rank)

Dewey County	29.10 years old
South Dakota	37.10 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Dewey County	28.10 years old
South Dakota	35.70 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Dewey County	30.90 years old
South Dakota	38.50 years old
U.S.	38.50 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	512	9.56%, see rank	7.14%	6.51%
5 to 9 years	500	9.33%, see rank	6.69%	6.57%
10 to 14 years	536	10.00%, see rank	6.73%	6.68%
15 to 19 years	499	9.31%, see rank	7.20%	7.09%
20 to 24 years	358	6.68%, see rank	7.06%	7.04%
25 to 34 years	620	11.57%, see rank	12.84%	13.32%
35 to 44 years	628	11.72%, see rank	11.55%	13.34%
45 to 54 years	715	13.34%, see rank	14.25%	14.44%
55 to 64 years	473	8.83%, see rank	12.14%	11.84%
65 to 74 years	345	6.44%, see rank	7.11%	7.12%
75 to 84	130	2.43%, see rank	4.91%	4.25%
85 years and over	42	0.78%, see rank	2.37%	1.78%

ACS 2006-2010 data

Total population: 5,354

Median Age (see rank)

Dewey County	28.80 years old
South Dakota	37.20 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Dewey County	25.70 years old
South Dakota	35.80 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Dewey County	30.80 years old
South Dakota	38.50 years old
U.S.	38.10 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	479	8.95%, see rank	7.07%	6.62%
5 to 9 years	478	8.93%, see rank	6.54%	6.62%
10 to 14 years	559	10.44%, see rank	7.00%	6.79%
15 to 19 years	545	10.18%, see rank	7.35%	7.28%
20 to 24 years	298	5.57%, see rank	7.21%	6.98%
25 to 34 years	660	12.33%, see rank	12.43%	13.22%
35 to 44 years	739	13.80%, see rank	12.10%	13.89%
45 to 54 years	641	11.97%, see rank	14.72%	14.57%
55 to 64 years	438	8.18%, see rank	11.32%	11.28%
65 to 74 years	247	4.61%, see rank	6.87%	6.74%
75 to 84	210	3.92%, see rank	5.07%	4.30%
85 years and over	60	1.12%, see rank	2.32%	1.70%

ACS 2005-2009 data

Total population: 6,007

Median Age (see rank)

Dewey County	28.10 years old
South Dakota	37.00 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Dewey County	25.40 years old
South Dakota	35.50 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Dewey County	28.60 years old
South Dakota	38.40 years old
U.S.	37.90 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	702	11.69%, see rank	7.07%	6.92%
5 to 9 years	499	8.31%, see rank	6.43%	6.59%
10 to 14 years	606	10.09%, see rank	6.83%	6.83%
15 to 19 years	670	11.15%, see rank	7.56%	7.15%
20 to 24 years	312	5.19%, see rank	7.61%	7.02%
25 to 34 years	724	12.05%, see rank	12.29%	13.42%
35 to 44 years	778	12.95%, see rank	12.31%	14.18%
45 to 54 years	720	11.99%, see rank	14.58%	14.48%
55 to 64 years	485	8.07%, see rank	10.99%	10.81%
65 to 74 years	261	4.34%, see rank	6.80%	6.50%
75 to 84	205	3.41%, see rank	5.20%	4.40%
85 years and over	45	0.75%, see rank	2.35%	1.71%

US Census 2000 data

Total population: 5,972

Median Age (see rank)

Dewey County	26.50 years old
South Dakota	35.60 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Dewey County	25.80 years old
South Dakota	34.40 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Dewey County	27.00 years old
South Dakota	36.70 years old
U.S.	36.50 years old

	Dewey County	% of the Total Population	South Dakota	U.S.
Under 5 years	550	9.21%, see rank	6.77%	6.81%
5 to 9 years	650	10.88%, see rank	7.22%	7.30%
10 to 14 years	695	11.64%, see rank	7.88%	7.29%
15 to 19 years	628	10.52%, see rank	8.27%	7.18%
20 to 24 years	338	5.66%, see rank	7.00%	6.74%
25 to 34 years	723	12.11%, see rank	12.06%	14.18%
35 to 44 years	901	15.09%, see rank	15.29%	16.04%
45 to 54 years	580	9.71%, see rank	12.94%	13.39%
55 to 64 years	413	6.92%, see rank	8.26%	8.63%
65 to 74 years	313	5.24%, see rank	7.04%	6.54%
75 to 84	136	2.28%, see rank	5.16%	4.39%
85 years and over	45	0.75%, see rank	2.13%	1.51%

* 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.