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Marshall County Historical Age Data

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ACS 2010-2014 data

Total population: 12,319

Median Age (see rank)

Marshall County	45.80 years old
Illinois	37.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Marshall County	44.40 years old
Illinois	35.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Marshall County	46.70 years old
Illinois	38.40 years old
U.S.	38.80 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	673	5.46%, see rank	6.30%	6.36%
5 to 9 years	757	6.14%, see rank	6.58%	6.51%
10 to 14 years	657	5.33%, see rank	6.71%	6.59%
15 to 19 years	753	6.11%, see rank	6.94%	6.85%
20 to 24 years	647	5.25%, see rank	6.95%	7.13%
25 to 34 years	1,213	9.85%, see rank	13.84%	13.47%
35 to 44 years	1,383	11.23%, see rank	13.20%	12.96%
45 to 54 years	1,801	14.62%, see rank	14.17%	14.09%
55 to 64 years	1,870	15.18%, see rank	12.13%	12.29%
65 to 74 years	1,338	10.86%, see rank	7.18%	7.64%
75 to 84	805	6.53%, see rank	4.10%	4.25%
85 years and over	422	3.43%, see rank	1.90%	1.85%

US Census 2010 data

Total population: 12,640

Median Age (see rank)

Marshall County	44.80 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Marshall County	43.70 years old
Illinois	35.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Marshall County	45.80 years old
Illinois	37.90 years old
U.S.	38.50 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	681	5.39%, see rank	6.51%	6.54%
5 to 9 years	723	5.72%, see rank	6.70%	6.59%
10 to 14 years	793	6.27%, see rank	6.85%	6.70%
15 to 19 years	858	6.79%, see rank	7.19%	7.14%
20 to 24 years	574	4.54%, see rank	6.85%	6.99%
25 to 34 years	1,258	9.95%, see rank	13.84%	13.30%
35 to 44 years	1,475	11.67%, see rank	13.45%	13.30%
45 to 54 years	1,944	15.38%, see rank	14.58%	14.58%
55 to 64 years	1,866	14.76%, see rank	11.48%	11.82%
65 to 74 years	1,249	9.88%, see rank	6.62%	7.03%
75 to 84	834	6.60%, see rank	4.09%	4.23%
85 years and over	385	3.05%, see rank	1.83%	1.78%

ACS 2008-2012 data

Total population: 12,567

Median Age (see rank)

Marshall County	44.90 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Marshall County	43.50 years old
Illinois	35.30 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Marshall County	46.60 years old
Illinois	38.00 years old
U.S.	38.50 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	660	5.25%, see rank	6.50%	6.51%
5 to 9 years	758	6.03%, see rank	6.68%	6.57%
10 to 14 years	723	5.75%, see rank	6.82%	6.68%
15 to 19 years	848	6.75%, see rank	7.16%	7.09%
20 to 24 years	594	4.73%, see rank	6.88%	7.04%
25 to 34 years	1,253	9.97%, see rank	13.84%	13.32%
35 to 44 years	1,468	11.68%, see rank	13.49%	13.34%
45 to 54 years	1,907	15.17%, see rank	14.46%	14.44%
55 to 64 years	1,841	14.65%, see rank	11.52%	11.84%
65 to 74 years	1,256	9.99%, see rank	6.71%	7.12%
75 to 84	831	6.61%, see rank	4.11%	4.25%
85 years and over	428	3.41%, see rank	1.83%	1.78%

ACS 2006-2010 data

Total population: 12,763

Median Age (see rank)

Marshall County	43.70 years old
Illinois	36.20 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Marshall County	42.30 years old
Illinois	34.90 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Marshall County	45.40 years old
Illinois	37.60 years old
U.S.	38.10 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	675	5.29%, see rank	6.63%	6.62%
5 to 9 years	796	6.24%, see rank	6.78%	6.62%
10 to 14 years	772	6.05%, see rank	6.94%	6.79%
15 to 19 years	892	6.99%, see rank	7.31%	7.28%
20 to 24 years	589	4.61%, see rank	6.86%	6.98%
25 to 34 years	1,311	10.27%, see rank	13.78%	13.22%
35 to 44 years	1,560	12.22%, see rank	13.96%	13.89%
45 to 54 years	1,969	15.43%, see rank	14.55%	14.57%
55 to 64 years	1,742	13.65%, see rank	10.89%	11.28%
65 to 74 years	1,199	9.39%, see rank	6.36%	6.74%
75 to 84	822	6.44%, see rank	4.17%	4.30%
85 years and over	436	3.42%, see rank	1.77%	1.70%

ACS 2005-2009 data

Total population: 12,831

Median Age (see rank)

Marshall County	43.30 years old
Illinois	35.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Marshall County	41.20 years old
Illinois	34.60 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Marshall County	45.20 years old
Illinois	37.20 years old
U.S.	37.90 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	723	5.63%, see rank	6.97%	6.92%
5 to 9 years	763	5.95%, see rank	6.76%	6.59%
10 to 14 years	837	6.52%, see rank	6.96%	6.83%
15 to 19 years	863	6.73%, see rank	7.24%	7.15%
20 to 24 years	614	4.79%, see rank	7.08%	7.02%
25 to 34 years	1,275	9.94%, see rank	13.73%	13.42%
35 to 44 years	1,654	12.89%, see rank	14.23%	14.18%
45 to 54 years	1,996	15.56%, see rank	14.47%	14.48%
55 to 64 years	1,714	13.36%, see rank	10.43%	10.81%
65 to 74 years	1,142	8.90%, see rank	6.21%	6.50%
75 to 84	824	6.42%, see rank	4.17%	4.40%
85 years and over	426	3.32%, see rank	1.74%	1.71%

US Census 2000 data

Total population: 13,180

Median Age (see rank)

Marshall County	40.90 years old
Illinois	34.70 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Marshall County	39.60 years old
Illinois	33.30 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Marshall County	42.40 years old
Illinois	36.00 years old
U.S.	36.50 years old

	Marshall County	% of the Total Population	Illinois	U.S.
Under 5 years	722	5.48%, see rank	7.06%	6.81%
5 to 9 years	940	7.13%, see rank	7.49%	7.30%
10 to 14 years	885	6.71%, see rank	7.29%	7.29%
15 to 19 years	878	6.66%, see rank	7.20%	7.18%
20 to 24 years	623	4.73%, see rank	6.85%	6.74%
25 to 34 years	1,464	11.11%, see rank	14.59%	14.18%
35 to 44 years	1,908	14.48%, see rank	15.97%	16.04%
45 to 54 years	1,899	14.41%, see rank	13.10%	13.39%
55 to 64 years	1,388	10.53%, see rank	8.38%	8.63%
65 to 74 years	1,181	8.96%, see rank	6.22%	6.54%
75 to 84	903	6.85%, see rank	4.31%	4.39%
85 years and over	389	2.95%, 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.