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Jefferson County Historical Age Data

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ACS 2010-2014 data

Total population: 29,978

Median Age (see rank)

Jefferson County	55.00 years old
Washington	37.40 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Jefferson County	53.60 years old
Washington	36.30 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Jefferson County	56.00 years old
Washington	38.40 years old
U.S.	38.80 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	1,107	3.69%, see rank	6.43%	6.36%
5 to 9 years	1,232	4.11%, see rank	6.33%	6.51%
10 to 14 years	1,166	3.89%, see rank	6.40%	6.59%
15 to 19 years	1,141	3.81%, see rank	6.49%	6.85%
20 to 24 years	1,239	4.13%, see rank	7.01%	7.13%
25 to 34 years	2,502	8.35%, see rank	14.18%	13.47%
35 to 44 years	2,547	8.50%, see rank	13.23%	12.96%
45 to 54 years	4,027	13.43%, see rank	13.98%	14.09%
55 to 64 years	6,354	21.20%, see rank	12.78%	12.29%
65 to 74 years	5,360	17.88%, see rank	7.59%	7.64%
75 to 84	2,254	7.52%, see rank	3.81%	4.25%
85 years and over	1,049	3.50%, see rank	1.78%	1.85%

US Census 2010 data

Total population: 29,872

Median Age (see rank)

Jefferson County	53.90 years old
Washington	37.30 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Jefferson County	53.20 years old
Washington	36.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Jefferson County	54.40 years old
Washington	38.30 years old
U.S.	38.50 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	1,068	3.58%, see rank	6.54%	6.54%
5 to 9 years	1,127	3.77%, see rank	6.39%	6.59%
10 to 14 years	1,367	4.58%, see rank	6.52%	6.70%
15 to 19 years	1,354	4.53%, see rank	6.87%	7.14%
20 to 24 years	1,105	3.70%, see rank	6.86%	6.99%
25 to 34 years	2,318	7.76%, see rank	13.89%	13.30%
35 to 44 years	2,731	9.14%, see rank	13.51%	13.30%
45 to 54 years	4,503	15.07%, see rank	14.70%	14.58%
55 to 64 years	6,457	21.62%, see rank	12.42%	11.82%
65 to 74 years	4,730	15.83%, see rank	6.80%	7.03%
75 to 84	2,286	7.65%, see rank	3.77%	4.23%
85 years and over	826	2.77%, see rank	1.74%	1.78%

ACS 2008-2012 data

Total population: 29,802

Median Age (see rank)

Jefferson County	53.80 years old
Washington	37.20 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Jefferson County	53.00 years old
Washington	36.20 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Jefferson County	54.70 years old
Washington	38.30 years old
U.S.	38.50 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	1,001	3.36%, see rank	6.50%	6.51%
5 to 9 years	1,179	3.96%, see rank	6.35%	6.57%
10 to 14 years	1,338	4.49%, see rank	6.50%	6.68%
15 to 19 years	1,299	4.36%, see rank	6.79%	7.09%
20 to 24 years	1,144	3.84%, see rank	6.98%	7.04%
25 to 34 years	2,399	8.05%, see rank	13.94%	13.32%
35 to 44 years	2,800	9.40%, see rank	13.54%	13.34%
45 to 54 years	4,351	14.60%, see rank	14.56%	14.44%
55 to 64 years	6,379	21.40%, see rank	12.43%	11.84%
65 to 74 years	4,834	16.22%, see rank	6.90%	7.12%
75 to 84	1,985	6.66%, see rank	3.83%	4.25%
85 years and over	1,093	3.67%, see rank	1.70%	1.78%

ACS 2006-2010 data

Total population: 29,574

Median Age (see rank)

Jefferson County	52.70 years old
Washington	37.00 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Jefferson County	51.80 years old
Washington	36.00 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Jefferson County	53.40 years old
Washington	38.00 years old
U.S.	38.10 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	984	3.33%, see rank	6.50%	6.62%
5 to 9 years	1,157	3.91%, see rank	6.41%	6.62%
10 to 14 years	1,545	5.22%, see rank	6.64%	6.79%
15 to 19 years	1,392	4.71%, see rank	7.05%	7.28%
20 to 24 years	1,034	3.50%, see rank	6.94%	6.98%
25 to 34 years	2,280	7.71%, see rank	13.67%	13.22%
35 to 44 years	2,965	10.03%, see rank	14.07%	13.89%
45 to 54 years	4,723	15.97%, see rank	14.95%	14.57%
55 to 64 years	6,311	21.34%, see rank	11.86%	11.28%
65 to 74 years	4,221	14.27%, see rank	6.38%	6.74%
75 to 84	2,125	7.19%, see rank	3.87%	4.30%
85 years and over	837	2.83%, see rank	1.65%	1.70%

ACS 2005-2009 data

Total population: 29,223

Median Age (see rank)

Jefferson County	52.00 years old
Washington	36.80 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Jefferson County	50.90 years old
Washington	35.70 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Jefferson County	53.30 years old
Washington	37.80 years old
U.S.	37.90 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	1,010	3.46%, see rank	6.67%	6.92%
5 to 9 years	1,106	3.78%, see rank	6.35%	6.59%
10 to 14 years	1,564	5.35%, see rank	6.71%	6.83%
15 to 19 years	1,608	5.50%, see rank	6.90%	7.15%
20 to 24 years	1,229	4.21%, see rank	7.03%	7.02%
25 to 34 years	2,022	6.92%, see rank	13.85%	13.42%
35 to 44 years	2,959	10.13%, see rank	14.28%	14.18%
45 to 54 years	4,723	16.16%, see rank	15.03%	14.48%
55 to 64 years	6,137	21.00%, see rank	11.43%	10.81%
65 to 74 years	3,969	13.58%, see rank	6.18%	6.50%
75 to 84	2,139	7.32%, see rank	3.97%	4.40%
85 years and over	757	2.59%, see rank	1.61%	1.71%

US Census 2000 data

Total population: 25,953

Median Age (see rank)

Jefferson County	47.10 years old
Washington	35.30 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Jefferson County	46.90 years old
Washington	34.40 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Jefferson County	47.20 years old
Washington	36.30 years old
U.S.	36.50 years old

	Jefferson County	% of the Total Population	Washington	U.S.
Under 5 years	1,059	4.08%, see rank	6.69%	6.81%
5 to 9 years	1,409	5.43%, see rank	7.23%	7.30%
10 to 14 years	1,640	6.32%, see rank	7.38%	7.29%
15 to 19 years	1,519	5.85%, see rank	7.26%	7.18%
20 to 24 years	801	3.09%, see rank	6.62%	6.74%
25 to 34 years	1,974	7.61%, see rank	14.27%	14.18%
35 to 44 years	3,631	13.99%, see rank	16.54%	16.04%
45 to 54 years	4,775	18.40%, see rank	14.35%	13.39%
55 to 64 years	3,664	14.12%, see rank	8.43%	8.63%
65 to 74 years	3,032	11.68%, see rank	5.72%	6.54%
75 to 84	1,903	7.33%, see rank	4.09%	4.39%
85 years and over	546	2.10%, see rank	1.43%	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.