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Decatur, IL Historical Age Data

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ACS 2010-2014 data

Total population: 75,088

Median Age (see rank)

Decatur, IL	38.80 years old
Illinois	37.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Decatur, IL	36.90 years old
Illinois	35.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Decatur, IL	40.70 years old
Illinois	38.40 years old
U.S.	38.80 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	5,069	6.75%, see rank	6.30%	6.36%
5 to 9 years	4,862	6.48%, see rank	6.58%	6.51%
10 to 14 years	4,158	5.54%, see rank	6.71%	6.59%
15 to 19 years	4,896	6.52%, see rank	6.94%	6.85%
20 to 24 years	5,607	7.47%, see rank	6.95%	7.13%
25 to 34 years	9,780	13.02%, see rank	13.84%	13.47%
35 to 44 years	7,955	10.59%, see rank	13.20%	12.96%
45 to 54 years	9,753	12.99%, see rank	14.17%	14.09%
55 to 64 years	10,134	13.50%, see rank	12.13%	12.29%
65 to 74 years	6,159	8.20%, see rank	7.18%	7.64%
75 to 84	4,512	6.01%, see rank	4.10%	4.25%
85 years and over	2,203	2.93%, see rank	1.90%	1.85%

US Census 2010 data

Total population: 76,122

Median Age (see rank)

Decatur, IL	39.10 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Decatur, IL	37.60 years old
Illinois	35.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Decatur, IL	40.40 years old
Illinois	37.90 years old
U.S.	38.50 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	5,089	6.69%, see rank	6.51%	6.54%
5 to 9 years	4,570	6.00%, see rank	6.70%	6.59%
10 to 14 years	4,356	5.72%, see rank	6.85%	6.70%
15 to 19 years	5,286	6.94%, see rank	7.19%	7.14%
20 to 24 years	5,780	7.59%, see rank	6.85%	6.99%
25 to 34 years	9,659	12.69%, see rank	13.84%	13.30%
35 to 44 years	8,168	10.73%, see rank	13.45%	13.30%
45 to 54 years	10,586	13.91%, see rank	14.58%	14.58%
55 to 64 years	9,795	12.87%, see rank	11.48%	11.82%
65 to 74 years	6,006	7.89%, see rank	6.62%	7.03%
75 to 84	4,547	5.97%, see rank	4.09%	4.23%
85 years and over	2,280	3.00%, see rank	1.83%	1.78%

ACS 2008-2012 data

Total population: 76,091

Median Age (see rank)

Decatur, IL	38.80 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Decatur, IL	37.40 years old
Illinois	35.30 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Decatur, IL	40.60 years old
Illinois	38.00 years old
U.S.	38.50 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	5,168	6.79%, see rank	6.50%	6.51%
5 to 9 years	5,020	6.60%, see rank	6.68%	6.57%
10 to 14 years	4,038	5.31%, see rank	6.82%	6.68%
15 to 19 years	5,285	6.95%, see rank	7.16%	7.09%
20 to 24 years	5,622	7.39%, see rank	6.88%	7.04%
25 to 34 years	9,618	12.64%, see rank	13.84%	13.32%
35 to 44 years	8,252	10.84%, see rank	13.49%	13.34%
45 to 54 years	10,381	13.64%, see rank	14.46%	14.44%
55 to 64 years	10,042	13.20%, see rank	11.52%	11.84%
65 to 74 years	5,816	7.64%, see rank	6.71%	7.12%
75 to 84	4,600	6.05%, see rank	4.11%	4.25%
85 years and over	2,249	2.96%, see rank	1.83%	1.78%

ACS 2006-2010 data

Total population: 76,429

Median Age (see rank)

Decatur, IL	39.10 years old
Illinois	36.20 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Decatur, IL	37.70 years old
Illinois	34.90 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Decatur, IL	40.70 years old
Illinois	37.60 years old
U.S.	38.10 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	5,165	6.76%, see rank	6.63%	6.62%
5 to 9 years	5,249	6.87%, see rank	6.78%	6.62%
10 to 14 years	3,862	5.05%, see rank	6.94%	6.79%
15 to 19 years	5,564	7.28%, see rank	7.31%	7.28%
20 to 24 years	5,618	7.35%, see rank	6.86%	6.98%
25 to 34 years	9,234	12.08%, see rank	13.78%	13.22%
35 to 44 years	8,659	11.33%, see rank	13.96%	13.89%
45 to 54 years	10,823	14.16%, see rank	14.55%	14.57%
55 to 64 years	9,571	12.52%, see rank	10.89%	11.28%
65 to 74 years	5,802	7.59%, see rank	6.36%	6.74%
75 to 84	4,725	6.18%, see rank	4.17%	4.30%
85 years and over	2,157	2.82%, see rank	1.77%	1.70%

ACS 2005-2009 data

Total population: 75,867

Median Age (see rank)

Decatur, IL	38.70 years old
Illinois	35.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Decatur, IL	36.60 years old
Illinois	34.60 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Decatur, IL	40.70 years old
Illinois	37.20 years old
U.S.	37.90 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	4,874	6.42%, see rank	6.97%	6.92%
5 to 9 years	4,840	6.38%, see rank	6.76%	6.59%
10 to 14 years	4,243	5.59%, see rank	6.96%	6.83%
15 to 19 years	5,444	7.18%, see rank	7.24%	7.15%
20 to 24 years	6,015	7.93%, see rank	7.08%	7.02%
25 to 34 years	9,261	12.21%, see rank	13.73%	13.42%
35 to 44 years	8,631	11.38%, see rank	14.23%	14.18%
45 to 54 years	10,870	14.33%, see rank	14.47%	14.48%
55 to 64 years	8,972	11.83%, see rank	10.43%	10.81%
65 to 74 years	5,890	7.76%, see rank	6.21%	6.50%
75 to 84	4,639	6.11%, see rank	4.17%	4.40%
85 years and over	2,188	2.88%, see rank	1.74%	1.71%

US Census 2000 data

Total population: 81,860

Median Age (see rank)

Decatur, IL	37.20 years old
Illinois	34.70 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Decatur, IL	35.40 years old
Illinois	33.30 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Decatur, IL	38.70 years old
Illinois	36.00 years old
U.S.	36.50 years old

	Decatur, IL	% of the Total Population	Illinois	U.S.
Under 5 years	5,479	6.69%, see rank	7.06%	6.81%
5 to 9 years	5,600	6.84%, see rank	7.49%	7.30%
10 to 14 years	5,407	6.61%, see rank	7.29%	7.29%
15 to 19 years	5,945	7.26%, see rank	7.20%	7.18%
20 to 24 years	6,322	7.72%, see rank	6.85%	6.74%
25 to 34 years	9,887	12.08%, see rank	14.59%	14.18%
35 to 44 years	11,368	13.89%, see rank	15.97%	16.04%
45 to 54 years	11,050	13.50%, see rank	13.10%	13.39%
55 to 64 years	7,403	9.04%, see rank	8.38%	8.63%
65 to 74 years	6,685	8.17%, see rank	6.22%	6.54%
75 to 84	4,932	6.02%, see rank	4.31%	4.39%
85 years and over	1,782	2.18%, 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.