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Johnston, IA Historical Age Data

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ACS 2010-2014 data

Total population: 18,874

Median Age (see rank)

Johnston, IA	38.10 years old
Iowa	38.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Johnston, IA	37.90 years old
Iowa	36.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Johnston, IA	38.40 years old
Iowa	39.40 years old
U.S.	38.80 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	1,283	6.80%, see rank	6.39%	6.36%
5 to 9 years	1,217	6.45%, see rank	6.62%	6.51%
10 to 14 years	1,619	8.58%, see rank	6.58%	6.59%
15 to 19 years	1,356	7.18%, see rank	6.96%	6.85%
20 to 24 years	692	3.67%, see rank	7.21%	7.13%
25 to 34 years	2,474	13.11%, see rank	12.65%	13.47%
35 to 44 years	3,311	17.54%, see rank	11.80%	12.96%
45 to 54 years	2,560	13.56%, see rank	13.73%	14.09%
55 to 64 years	2,355	12.48%, see rank	12.80%	12.29%
65 to 74 years	1,292	6.85%, see rank	7.81%	7.64%
75 to 84	502	2.66%, see rank	4.98%	4.25%
85 years and over	213	1.13%, see rank	2.48%	1.85%

US Census 2010 data

Total population: 17,278

Median Age (see rank)

Johnston, IA	36.90 years old
Iowa	38.10 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Johnston, IA	35.40 years old
Iowa	36.60 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Johnston, IA	38.10 years old
Iowa	39.50 years old
U.S.	38.50 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	1,239	7.17%, see rank	6.63%	6.54%
5 to 9 years	1,557	9.01%, see rank	6.59%	6.59%
10 to 14 years	1,509	8.73%, see rank	6.59%	6.70%
15 to 19 years	1,189	6.88%, see rank	7.12%	7.14%
20 to 24 years	672	3.89%, see rank	7.00%	6.99%
25 to 34 years	2,023	11.71%, see rank	12.56%	13.30%
35 to 44 years	2,935	16.99%, see rank	11.97%	13.30%
45 to 54 years	2,669	15.45%, see rank	14.43%	14.58%
55 to 64 years	1,773	10.26%, see rank	12.24%	11.82%
65 to 74 years	885	5.12%, see rank	7.37%	7.03%
75 to 84	519	3.00%, see rank	5.04%	4.23%
85 years and over	308	1.78%, see rank	2.45%	1.78%

ACS 2008-2012 data

Total population: 17,316

Median Age (see rank)

Johnston, IA	35.70 years old
Iowa	38.00 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Johnston, IA	35.80 years old
Iowa	36.60 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Johnston, IA	35.50 years old
Iowa	39.40 years old
U.S.	38.50 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	1,205	6.96%, see rank	6.53%	6.51%
5 to 9 years	1,180	6.81%, see rank	6.58%	6.57%
10 to 14 years	1,604	9.26%, see rank	6.60%	6.68%
15 to 19 years	1,260	7.28%, see rank	7.14%	7.09%
20 to 24 years	964	5.57%, see rank	7.08%	7.04%
25 to 34 years	2,319	13.39%, see rank	12.55%	13.32%
35 to 44 years	2,670	15.42%, see rank	12.02%	13.34%
45 to 54 years	2,514	14.52%, see rank	14.28%	14.44%
55 to 64 years	1,976	11.41%, see rank	12.27%	11.84%
65 to 74 years	931	5.38%, see rank	7.45%	7.12%
75 to 84	435	2.51%, see rank	5.08%	4.25%
85 years and over	258	1.49%, see rank	2.42%	1.78%

ACS 2006-2010 data

Total population: 15,723

Median Age (see rank)

Johnston, IA	35.50 years old
Iowa	38.00 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Johnston, IA	34.20 years old
Iowa	36.60 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Johnston, IA	38.10 years old
Iowa	39.30 years old
U.S.	38.10 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	1,197	7.61%, see rank	6.56%	6.62%
5 to 9 years	1,266	8.05%, see rank	6.57%	6.62%
10 to 14 years	1,208	7.68%, see rank	6.64%	6.79%
15 to 19 years	1,075	6.84%, see rank	7.28%	7.28%
20 to 24 years	882	5.61%, see rank	7.14%	6.98%
25 to 34 years	2,114	13.45%, see rank	12.25%	13.22%
35 to 44 years	2,315	14.72%, see rank	12.56%	13.89%
45 to 54 years	2,557	16.26%, see rank	14.61%	14.57%
55 to 64 years	1,585	10.08%, see rank	11.58%	11.28%
65 to 74 years	769	4.89%, see rank	7.21%	6.74%
75 to 84	479	3.05%, see rank	5.24%	4.30%
85 years and over	276	1.76%, see rank	2.36%	1.70%

ACS 2005-2009 data

Total population: 14,968

Median Age (see rank)

Johnston, IA	34.70 years old
Iowa	37.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Johnston, IA	34.30 years old
Iowa	36.50 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Johnston, IA	35.10 years old
Iowa	39.30 years old
U.S.	37.90 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	1,344	8.98%, see rank	6.61%	6.92%
5 to 9 years	1,347	9.00%, see rank	6.38%	6.59%
10 to 14 years	1,109	7.41%, see rank	6.59%	6.83%
15 to 19 years	920	6.15%, see rank	7.37%	7.15%
20 to 24 years	807	5.39%, see rank	7.65%	7.02%
25 to 34 years	2,026	13.54%, see rank	11.90%	13.42%
35 to 44 years	2,277	15.21%, see rank	12.95%	14.18%
45 to 54 years	2,356	15.74%, see rank	14.71%	14.48%
55 to 64 years	1,304	8.71%, see rank	11.11%	10.81%
65 to 74 years	669	4.47%, see rank	7.05%	6.50%
75 to 84	467	3.12%, see rank	5.30%	4.40%
85 years and over	342	2.28%, see rank	2.38%	1.71%

US Census 2000 data

Total population: 8,649

Median Age (see rank)

Johnston, IA	36.30 years old
Iowa	36.60 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Johnston, IA	34.70 years old
Iowa	35.20 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Johnston, IA	37.70 years old
Iowa	38.00 years old
U.S.	36.50 years old

	Johnston, IA	% of the Total Population	Iowa	U.S.
Under 5 years	612	7.08%, see rank	6.44%	6.81%
5 to 9 years	752	8.69%, see rank	6.92%	7.30%
10 to 14 years	721	8.34%, see rank	7.19%	7.29%
15 to 19 years	642	7.42%, see rank	7.74%	7.18%
20 to 24 years	293	3.39%, see rank	6.96%	6.74%
25 to 34 years	1,081	12.50%, see rank	12.41%	14.18%
35 to 44 years	1,654	19.12%, see rank	15.21%	16.04%
45 to 54 years	1,348	15.59%, see rank	13.42%	13.39%
55 to 64 years	604	6.98%, see rank	8.80%	8.63%
65 to 74 years	438	5.06%, see rank	7.24%	6.54%
75 to 84	318	3.68%, see rank	5.44%	4.39%
85 years and over	186	2.15%, see rank	2.23%	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.