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Keystone, IA Historical Age Data

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ACS 2010-2014 data

Total population: 657

Median Age (see rank)

Keystone, IA	47.80 years old
Iowa	38.00 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Keystone, IA	48.50 years old
Iowa	36.70 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Keystone, IA	45.80 years old
Iowa	39.40 years old
U.S.	38.80 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	28	4.26%, see rank	6.39%	6.36%
5 to 9 years	41	6.24%, see rank	6.62%	6.51%
10 to 14 years	45	6.85%, see rank	6.58%	6.59%
15 to 19 years	28	4.26%, see rank	6.96%	6.85%
20 to 24 years	10	1.52%, see rank	7.21%	7.13%
25 to 34 years	53	8.07%, see rank	12.65%	13.47%
35 to 44 years	79	12.02%, see rank	11.80%	12.96%
45 to 54 years	112	17.05%, see rank	13.73%	14.09%
55 to 64 years	74	11.26%, see rank	12.80%	12.29%
65 to 74 years	52	7.91%, see rank	7.81%	7.64%
75 to 84	57	8.68%, see rank	4.98%	4.25%
85 years and over	78	11.87%, see rank	2.48%	1.85%

US Census 2010 data

Total population: 622

Median Age (see rank)

Keystone, IA	42.80 years old
Iowa	38.10 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Keystone, IA	40.10 years old
Iowa	36.60 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Keystone, IA	46.00 years old
Iowa	39.50 years old
U.S.	38.50 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	32	5.14%, see rank	6.63%	6.54%
5 to 9 years	39	6.27%, see rank	6.59%	6.59%
10 to 14 years	47	7.56%, see rank	6.59%	6.70%
15 to 19 years	41	6.59%, see rank	7.12%	7.14%
20 to 24 years	27	4.34%, see rank	7.00%	6.99%
25 to 34 years	63	10.13%, see rank	12.56%	13.30%
35 to 44 years	80	12.86%, see rank	11.97%	13.30%
45 to 54 years	79	12.70%, see rank	14.43%	14.58%
55 to 64 years	62	9.97%, see rank	12.24%	11.82%
65 to 74 years	51	8.20%, see rank	7.37%	7.03%
75 to 84	46	7.40%, see rank	5.04%	4.23%
85 years and over	55	8.84%, see rank	2.45%	1.78%

ACS 2008-2012 data

Total population: 638

Median Age (see rank)

Keystone, IA	47.10 years old
Iowa	38.00 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Keystone, IA	46.20 years old
Iowa	36.60 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Keystone, IA	49.90 years old
Iowa	39.40 years old
U.S.	38.50 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	45	7.05%, see rank	6.53%	6.51%
5 to 9 years	28	4.39%, see rank	6.58%	6.57%
10 to 14 years	33	5.17%, see rank	6.60%	6.68%
15 to 19 years	26	4.08%, see rank	7.14%	7.09%
20 to 24 years	14	2.19%, see rank	7.08%	7.04%
25 to 34 years	78	12.23%, see rank	12.55%	13.32%
35 to 44 years	82	12.85%, see rank	12.02%	13.34%
45 to 54 years	79	12.38%, see rank	14.28%	14.44%
55 to 64 years	63	9.87%, see rank	12.27%	11.84%
65 to 74 years	48	7.52%, see rank	7.45%	7.12%
75 to 84	64	10.03%, see rank	5.08%	4.25%
85 years and over	78	12.23%, see rank	2.42%	1.78%

ACS 2006-2010 data

Total population: 674

Median Age (see rank)

Keystone, IA	39.00 years old
Iowa	38.00 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Keystone, IA	40.10 years old
Iowa	36.60 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Keystone, IA	36.40 years old
Iowa	39.30 years old
U.S.	38.10 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	61	9.05%, see rank	6.56%	6.62%
5 to 9 years	47	6.97%, see rank	6.57%	6.62%
10 to 14 years	35	5.19%, see rank	6.64%	6.79%
15 to 19 years	29	4.30%, see rank	7.28%	7.28%
20 to 24 years	19	2.82%, see rank	7.14%	6.98%
25 to 34 years	103	15.28%, see rank	12.25%	13.22%
35 to 44 years	107	15.88%, see rank	12.56%	13.89%
45 to 54 years	54	8.01%, see rank	14.61%	14.57%
55 to 64 years	63	9.35%, see rank	11.58%	11.28%
65 to 74 years	53	7.86%, see rank	7.21%	6.74%
75 to 84	57	8.46%, see rank	5.24%	4.30%
85 years and over	46	6.82%, see rank	2.36%	1.70%

ACS 2005-2009 data

Total population: 682

Median Age (see rank)

Keystone, IA	38.50 years old
Iowa	37.90 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Keystone, IA	39.90 years old
Iowa	36.50 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Keystone, IA	36.60 years old
Iowa	39.30 years old
U.S.	37.90 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	73	10.70%, see rank	6.61%	6.92%
5 to 9 years	49	7.18%, see rank	6.38%	6.59%
10 to 14 years	33	4.84%, see rank	6.59%	6.83%
15 to 19 years	33	4.84%, see rank	7.37%	7.15%
20 to 24 years	22	3.23%, see rank	7.65%	7.02%
25 to 34 years	93	13.64%, see rank	11.90%	13.42%
35 to 44 years	108	15.84%, see rank	12.95%	14.18%
45 to 54 years	67	9.82%, see rank	14.71%	14.48%
55 to 64 years	58	8.50%, see rank	11.11%	10.81%
65 to 74 years	57	8.36%, see rank	7.05%	6.50%
75 to 84	56	8.21%, see rank	5.30%	4.40%
85 years and over	33	4.84%, see rank	2.38%	1.71%

US Census 2000 data

Total population: 687

Median Age (see rank)

Keystone, IA	39.60 years old
Iowa	36.60 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Keystone, IA	37.40 years old
Iowa	35.20 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Keystone, IA	41.90 years old
Iowa	38.00 years old
U.S.	36.50 years old

	Keystone, IA	% of the Total Population	Iowa	U.S.
Under 5 years	34	4.95%, see rank	6.44%	6.81%
5 to 9 years	51	7.42%, see rank	6.92%	7.30%
10 to 14 years	57	8.30%, see rank	7.19%	7.29%
15 to 19 years	47	6.84%, see rank	7.74%	7.18%
20 to 24 years	37	5.39%, see rank	6.96%	6.74%
25 to 34 years	70	10.19%, see rank	12.41%	14.18%
35 to 44 years	92	13.39%, see rank	15.21%	16.04%
45 to 54 years	58	8.44%, see rank	13.42%	13.39%
55 to 64 years	48	6.99%, see rank	8.80%	8.63%
65 to 74 years	61	8.88%, see rank	7.24%	6.54%
75 to 84	76	11.06%, see rank	5.44%	4.39%
85 years and over	56	8.15%, 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.