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Northfield, IL Historical Age Data

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ACS 2010-2014 data

Total population: 5,332

Median Age (see rank)

Northfield, IL	47.90 years old
Illinois	37.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Northfield, IL	47.20 years old
Illinois	35.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Northfield, IL	48.50 years old
Illinois	38.40 years old
U.S.	38.80 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	169	3.17%, see rank	6.30%	6.36%
5 to 9 years	300	5.63%, see rank	6.58%	6.51%
10 to 14 years	476	8.93%, see rank	6.71%	6.59%
15 to 19 years	486	9.11%, see rank	6.94%	6.85%
20 to 24 years	168	3.15%, see rank	6.95%	7.13%
25 to 34 years	396	7.43%, see rank	13.84%	13.47%
35 to 44 years	430	8.06%, see rank	13.20%	12.96%
45 to 54 years	893	16.75%, see rank	14.17%	14.09%
55 to 64 years	778	14.59%, see rank	12.13%	12.29%
65 to 74 years	704	13.20%, see rank	7.18%	7.64%
75 to 84	348	6.53%, see rank	4.10%	4.25%
85 years and over	184	3.45%, see rank	1.90%	1.85%

US Census 2010 data

Total population: 5,420

Median Age (see rank)

Northfield, IL	48.20 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Northfield, IL	46.50 years old
Illinois	35.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Northfield, IL	49.50 years old
Illinois	37.90 years old
U.S.	38.50 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	245	4.52%, see rank	6.51%	6.54%
5 to 9 years	353	6.51%, see rank	6.70%	6.59%
10 to 14 years	439	8.10%, see rank	6.85%	6.70%
15 to 19 years	377	6.96%, see rank	7.19%	7.14%
20 to 24 years	195	3.60%, see rank	6.85%	6.99%
25 to 34 years	271	5.00%, see rank	13.84%	13.30%
35 to 44 years	560	10.33%, see rank	13.45%	13.30%
45 to 54 years	959	17.69%, see rank	14.58%	14.58%
55 to 64 years	819	15.11%, see rank	11.48%	11.82%
65 to 74 years	603	11.13%, see rank	6.62%	7.03%
75 to 84	457	8.43%, see rank	4.09%	4.23%
85 years and over	142	2.62%, see rank	1.83%	1.78%

ACS 2008-2012 data

Total population: 5,234

Median Age (see rank)

Northfield, IL	50.40 years old
Illinois	36.60 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Northfield, IL	49.60 years old
Illinois	35.30 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Northfield, IL	50.80 years old
Illinois	38.00 years old
U.S.	38.50 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	215	4.11%, see rank	6.50%	6.51%
5 to 9 years	310	5.92%, see rank	6.68%	6.57%
10 to 14 years	403	7.70%, see rank	6.82%	6.68%
15 to 19 years	273	5.22%, see rank	7.16%	7.09%
20 to 24 years	226	4.32%, see rank	6.88%	7.04%
25 to 34 years	322	6.15%, see rank	13.84%	13.32%
35 to 44 years	458	8.75%, see rank	13.49%	13.34%
45 to 54 years	813	15.53%, see rank	14.46%	14.44%
55 to 64 years	950	18.15%, see rank	11.52%	11.84%
65 to 74 years	697	13.32%, see rank	6.71%	7.12%
75 to 84	510	9.74%, see rank	4.11%	4.25%
85 years and over	57	1.09%, see rank	1.83%	1.78%

ACS 2006-2010 data

Total population: 5,429

Median Age (see rank)

Northfield, IL	46.60 years old
Illinois	36.20 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Northfield, IL	44.40 years old
Illinois	34.90 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Northfield, IL	47.80 years old
Illinois	37.60 years old
U.S.	38.10 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	244	4.49%, see rank	6.63%	6.62%
5 to 9 years	434	7.99%, see rank	6.78%	6.62%
10 to 14 years	385	7.09%, see rank	6.94%	6.79%
15 to 19 years	414	7.63%, see rank	7.31%	7.28%
20 to 24 years	176	3.24%, see rank	6.86%	6.98%
25 to 34 years	342	6.30%, see rank	13.78%	13.22%
35 to 44 years	624	11.49%, see rank	13.96%	13.89%
45 to 54 years	799	14.72%, see rank	14.55%	14.57%
55 to 64 years	880	16.21%, see rank	10.89%	11.28%
65 to 74 years	660	12.16%, see rank	6.36%	6.74%
75 to 84	458	8.44%, see rank	4.17%	4.30%
85 years and over	13	0.24%, see rank	1.77%	1.70%

ACS 2005-2009 data

Total population: 5,441

Median Age (see rank)

Northfield, IL	46.10 years old
Illinois	35.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Northfield, IL	44.10 years old
Illinois	34.60 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Northfield, IL	48.30 years old
Illinois	37.20 years old
U.S.	37.90 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	278	5.11%, see rank	6.97%	6.92%
5 to 9 years	449	8.25%, see rank	6.76%	6.59%
10 to 14 years	364	6.69%, see rank	6.96%	6.83%
15 to 19 years	419	7.70%, see rank	7.24%	7.15%
20 to 24 years	195	3.58%, see rank	7.08%	7.02%
25 to 34 years	300	5.51%, see rank	13.73%	13.42%
35 to 44 years	643	11.82%, see rank	14.23%	14.18%
45 to 54 years	712	13.09%, see rank	14.47%	14.48%
55 to 64 years	946	17.39%, see rank	10.43%	10.81%
65 to 74 years	628	11.54%, see rank	6.21%	6.50%
75 to 84	489	8.99%, see rank	4.17%	4.40%
85 years and over	18	0.33%, see rank	1.74%	1.71%

US Census 2000 data

Total population: 5,389

Median Age (see rank)

Northfield, IL	44.40 years old
Illinois	34.70 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Northfield, IL	42.80 years old
Illinois	33.30 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Northfield, IL	45.90 years old
Illinois	36.00 years old
U.S.	36.50 years old

	Northfield, IL	% of the Total Population	Illinois	U.S.
Under 5 years	320	5.94%, see rank	7.06%	6.81%
5 to 9 years	405	7.52%, see rank	7.49%	7.30%
10 to 14 years	423	7.85%, see rank	7.29%	7.29%
15 to 19 years	322	5.98%, see rank	7.20%	7.18%
20 to 24 years	105	1.95%, see rank	6.85%	6.74%
25 to 34 years	343	6.36%, see rank	14.59%	14.18%
35 to 44 years	835	15.49%, see rank	15.97%	16.04%
45 to 54 years	844	15.66%, see rank	13.10%	13.39%
55 to 64 years	667	12.38%, see rank	8.38%	8.63%
65 to 74 years	652	12.10%, see rank	6.22%	6.54%
75 to 84	395	7.33%, see rank	4.31%	4.39%
85 years and over	78	1.45%, 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.