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Saint Clair County Historical Age Data

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ACS 2010-2014 data

Total population: 268,415

Median Age (see rank)

Saint Clair County	37.50 years old
Illinois	37.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Saint Clair County	35.90 years old
Illinois	35.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Saint Clair County	39.00 years old
Illinois	38.40 years old
U.S.	38.80 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	17,720	6.60%, see rank	6.30%	6.36%
5 to 9 years	18,580	6.92%, see rank	6.58%	6.51%
10 to 14 years	18,392	6.85%, see rank	6.71%	6.59%
15 to 19 years	18,336	6.83%, see rank	6.94%	6.85%
20 to 24 years	17,848	6.65%, see rank	6.95%	7.13%
25 to 34 years	35,066	13.06%, see rank	13.84%	13.47%
35 to 44 years	34,290	12.77%, see rank	13.20%	12.96%
45 to 54 years	39,535	14.73%, see rank	14.17%	14.09%
55 to 64 years	33,435	12.46%, see rank	12.13%	12.29%
65 to 74 years	18,722	6.98%, see rank	7.18%	7.64%
75 to 84	11,731	4.37%, see rank	4.10%	4.25%
85 years and over	4,760	1.77%, see rank	1.90%	1.85%

US Census 2010 data

Total population: 270,056

Median Age (see rank)

Saint Clair County	36.90 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Saint Clair County	35.40 years old
Illinois	35.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Saint Clair County	38.30 years old
Illinois	37.90 years old
U.S.	38.50 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	18,398	6.81%, see rank	6.51%	6.54%
5 to 9 years	18,671	6.91%, see rank	6.70%	6.59%
10 to 14 years	19,182	7.10%, see rank	6.85%	6.70%
15 to 19 years	19,754	7.31%, see rank	7.19%	7.14%
20 to 24 years	17,426	6.45%, see rank	6.85%	6.99%
25 to 34 years	35,178	13.03%, see rank	13.84%	13.30%
35 to 44 years	35,217	13.04%, see rank	13.45%	13.30%
45 to 54 years	41,306	15.30%, see rank	14.58%	14.58%
55 to 64 years	31,114	11.52%, see rank	11.48%	11.82%
65 to 74 years	17,252	6.39%, see rank	6.62%	7.03%
75 to 84	11,852	4.39%, see rank	4.09%	4.23%
85 years and over	4,706	1.74%, see rank	1.83%	1.78%

ACS 2008-2012 data

Total population: 268,873

Median Age (see rank)

Saint Clair County	37.10 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Saint Clair County	35.50 years old
Illinois	35.30 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Saint Clair County	38.50 years old
Illinois	38.00 years old
U.S.	38.50 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	18,283	6.80%, see rank	6.50%	6.51%
5 to 9 years	18,668	6.94%, see rank	6.68%	6.57%
10 to 14 years	18,873	7.02%, see rank	6.82%	6.68%
15 to 19 years	19,403	7.22%, see rank	7.16%	7.09%
20 to 24 years	17,616	6.55%, see rank	6.88%	7.04%
25 to 34 years	34,972	13.01%, see rank	13.84%	13.32%
35 to 44 years	35,191	13.09%, see rank	13.49%	13.34%
45 to 54 years	40,670	15.13%, see rank	14.46%	14.44%
55 to 64 years	31,179	11.60%, see rank	11.52%	11.84%
65 to 74 years	17,442	6.49%, see rank	6.71%	7.12%
75 to 84	11,674	4.34%, see rank	4.11%	4.25%
85 years and over	4,902	1.82%, see rank	1.83%	1.78%

ACS 2006-2010 data

Total population: 266,727

Median Age (see rank)

Saint Clair County	36.70 years old
Illinois	36.20 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Saint Clair County	35.20 years old
Illinois	34.90 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Saint Clair County	38.10 years old
Illinois	37.60 years old
U.S.	38.10 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	18,331	6.87%, see rank	6.63%	6.62%
5 to 9 years	18,759	7.03%, see rank	6.78%	6.62%
10 to 14 years	19,189	7.19%, see rank	6.94%	6.79%
15 to 19 years	19,843	7.44%, see rank	7.31%	7.28%
20 to 24 years	17,326	6.50%, see rank	6.86%	6.98%
25 to 34 years	34,203	12.82%, see rank	13.78%	13.22%
35 to 44 years	36,335	13.62%, see rank	13.96%	13.89%
45 to 54 years	40,650	15.24%, see rank	14.55%	14.57%
55 to 64 years	28,847	10.82%, see rank	10.89%	11.28%
65 to 74 years	16,638	6.24%, see rank	6.36%	6.74%
75 to 84	11,995	4.50%, see rank	4.17%	4.30%
85 years and over	4,611	1.73%, see rank	1.77%	1.70%

ACS 2005-2009 data

Total population: 261,268

Median Age (see rank)

Saint Clair County	36.20 years old
Illinois	35.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Saint Clair County	34.60 years old
Illinois	34.60 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Saint Clair County	37.70 years old
Illinois	37.20 years old
U.S.	37.90 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	18,522	7.09%, see rank	6.97%	6.92%
5 to 9 years	18,632	7.13%, see rank	6.76%	6.59%
10 to 14 years	18,198	6.97%, see rank	6.96%	6.83%
15 to 19 years	19,359	7.41%, see rank	7.24%	7.15%
20 to 24 years	18,091	6.92%, see rank	7.08%	7.02%
25 to 34 years	33,540	12.84%, see rank	13.73%	13.42%
35 to 44 years	35,713	13.67%, see rank	14.23%	14.18%
45 to 54 years	39,376	15.07%, see rank	14.47%	14.48%
55 to 64 years	27,016	10.34%, see rank	10.43%	10.81%
65 to 74 years	16,182	6.19%, see rank	6.21%	6.50%
75 to 84	12,126	4.64%, see rank	4.17%	4.40%
85 years and over	4,513	1.73%, see rank	1.74%	1.71%

US Census 2000 data

Total population: 256,082

Median Age (see rank)

Saint Clair County	35.30 years old
Illinois	34.70 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Saint Clair County	33.80 years old
Illinois	33.30 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Saint Clair County	36.60 years old
Illinois	36.00 years old
U.S.	36.50 years old

	Saint Clair County	% of the Total Population	Illinois	U.S.
Under 5 years	17,769	6.94%, see rank	7.06%	6.81%
5 to 9 years	19,970	7.80%, see rank	7.49%	7.30%
10 to 14 years	20,853	8.14%, see rank	7.29%	7.29%
15 to 19 years	19,463	7.60%, see rank	7.20%	7.18%
20 to 24 years	15,678	6.12%, see rank	6.85%	6.74%
25 to 34 years	33,076	12.92%, see rank	14.59%	14.18%
35 to 44 years	41,639	16.26%, see rank	15.97%	16.04%
45 to 54 years	33,474	13.07%, see rank	13.10%	13.39%
55 to 64 years	20,451	7.99%, see rank	8.38%	8.63%
65 to 74 years	17,849	6.97%, see rank	6.22%	6.54%
75 to 84	11,691	4.57%, see rank	4.31%	4.39%
85 years and over	4,169	1.63%, see rank	1.55%	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.