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Jefferson County Historical Age Data

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ACS 2010-2014 data

Total population: 751,485

Median Age (see rank)

Jefferson County	37.90 years old
Kentucky	38.30 years old
U.S.	37.40 years old

Median Age, Male (see rank)

Jefferson County	36.40 years old
Kentucky	37.00 years old
U.S.	36.10 years old

Median Age, Female (see rank)

Jefferson County	39.60 years old
Kentucky	39.70 years old
U.S.	38.80 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	49,039	6.53%, see rank	6.34%	6.36%
5 to 9 years	46,424	6.18%, see rank	6.44%	6.51%
10 to 14 years	48,346	6.43%, see rank	6.56%	6.59%
15 to 19 years	46,072	6.13%, see rank	6.59%	6.85%
20 to 24 years	50,226	6.68%, see rank	7.01%	7.13%
25 to 34 years	107,074	14.25%, see rank	12.91%	13.47%
35 to 44 years	96,049	12.78%, see rank	12.97%	12.96%
45 to 54 years	106,809	14.21%, see rank	14.30%	14.09%
55 to 64 years	97,366	12.96%, see rank	12.86%	12.29%
65 to 74 years	55,812	7.43%, see rank	8.08%	7.64%
75 to 84	33,492	4.46%, see rank	4.25%	4.25%
85 years and over	14,776	1.97%, see rank	1.69%	1.85%

US Census 2010 data

Total population: 741,096

Median Age (see rank)

Jefferson County	37.90 years old
Kentucky	38.10 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Jefferson County	36.20 years old
Kentucky	36.70 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Jefferson County	39.40 years old
Kentucky	39.30 years old
U.S.	38.50 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	48,634	6.56%, see rank	6.51%	6.54%
5 to 9 years	47,238	6.37%, see rank	6.52%	6.59%
10 to 14 years	47,444	6.40%, see rank	6.55%	6.70%
15 to 19 years	47,427	6.40%, see rank	6.84%	7.14%
20 to 24 years	48,887	6.60%, see rank	6.68%	6.99%
25 to 34 years	104,283	14.07%, see rank	13.05%	13.30%
35 to 44 years	95,930	12.94%, see rank	13.29%	13.30%
45 to 54 years	110,757	14.95%, see rank	14.82%	14.58%
55 to 64 years	91,401	12.33%, see rank	12.42%	11.82%
65 to 74 years	51,062	6.89%, see rank	7.50%	7.03%
75 to 84	33,979	4.58%, see rank	4.23%	4.23%
85 years and over	14,054	1.90%, see rank	1.59%	1.78%

ACS 2008-2012 data

Total population: 741,285

Median Age (see rank)

Jefferson County	37.80 years old
Kentucky	38.00 years old
U.S.	37.20 years old

Median Age, Male (see rank)

Jefferson County	36.20 years old
Kentucky	36.70 years old
U.S.	35.80 years old

Median Age, Female (see rank)

Jefferson County	39.30 years old
Kentucky	39.30 years old
U.S.	38.50 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	48,680	6.57%, see rank	6.47%	6.51%
5 to 9 years	47,084	6.35%, see rank	6.47%	6.57%
10 to 14 years	47,494	6.41%, see rank	6.61%	6.68%
15 to 19 years	46,709	6.30%, see rank	6.78%	7.09%
20 to 24 years	49,017	6.61%, see rank	6.80%	7.04%
25 to 34 years	104,726	14.13%, see rank	12.98%	13.32%
35 to 44 years	96,379	13.00%, see rank	13.34%	13.34%
45 to 54 years	109,804	14.81%, see rank	14.66%	14.44%
55 to 64 years	91,800	12.38%, see rank	12.45%	11.84%
65 to 74 years	51,575	6.96%, see rank	7.59%	7.12%
75 to 84	34,212	4.62%, see rank	4.21%	4.25%
85 years and over	13,805	1.86%, see rank	1.64%	1.78%

ACS 2006-2010 data

Total population: 729,452

Median Age (see rank)

Jefferson County	37.70 years old
Kentucky	37.70 years old
U.S.	36.90 years old

Median Age, Male (see rank)

Jefferson County	36.10 years old
Kentucky	36.30 years old
U.S.	35.60 years old

Median Age, Female (see rank)

Jefferson County	39.30 years old
Kentucky	39.00 years old
U.S.	38.10 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	47,702	6.54%, see rank	6.49%	6.62%
5 to 9 years	47,975	6.58%, see rank	6.53%	6.62%
10 to 14 years	46,000	6.31%, see rank	6.65%	6.79%
15 to 19 years	47,111	6.46%, see rank	6.96%	7.28%
20 to 24 years	47,572	6.52%, see rank	6.73%	6.98%
25 to 34 years	102,094	14.00%, see rank	13.03%	13.22%
35 to 44 years	98,569	13.51%, see rank	13.86%	13.89%
45 to 54 years	110,495	15.15%, see rank	14.80%	14.57%
55 to 64 years	85,201	11.68%, see rank	11.89%	11.28%
65 to 74 years	48,906	6.70%, see rank	7.24%	6.74%
75 to 84	33,955	4.65%, see rank	4.23%	4.30%
85 years and over	13,872	1.90%, see rank	1.59%	1.70%

ACS 2005-2009 data

Total population: 711,317

Median Age (see rank)

Jefferson County	37.30 years old
Kentucky	37.30 years old
U.S.	36.50 years old

Median Age, Male (see rank)

Jefferson County	35.70 years old
Kentucky	35.80 years old
U.S.	35.20 years old

Median Age, Female (see rank)

Jefferson County	39.10 years old
Kentucky	38.70 years old
U.S.	37.90 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	49,677	6.98%, see rank	6.66%	6.92%
5 to 9 years	46,307	6.51%, see rank	6.43%	6.59%
10 to 14 years	44,692	6.28%, see rank	6.57%	6.83%
15 to 19 years	44,995	6.33%, see rank	6.86%	7.15%
20 to 24 years	43,799	6.16%, see rank	7.03%	7.02%
25 to 34 years	103,725	14.58%, see rank	13.30%	13.42%
35 to 44 years	97,520	13.71%, see rank	14.13%	14.18%
45 to 54 years	107,197	15.07%, see rank	14.71%	14.48%
55 to 64 years	78,624	11.05%, see rank	11.42%	10.81%
65 to 74 years	46,824	6.58%, see rank	6.97%	6.50%
75 to 84	34,262	4.82%, see rank	4.33%	4.40%
85 years and over	13,695	1.93%, see rank	1.58%	1.71%

US Census 2000 data

Total population: 693,604

Median Age (see rank)

Jefferson County	36.70 years old
Kentucky	35.90 years old
U.S.	35.30 years old

Median Age, Male (see rank)

Jefferson County	35.10 years old
Kentucky	34.60 years old
U.S.	34.00 years old

Median Age, Female (see rank)

Jefferson County	38.20 years old
Kentucky	37.10 years old
U.S.	36.50 years old

	Jefferson County	% of the Total Population	Kentucky	U.S.
Under 5 years	46,600	6.72%, see rank	6.58%	6.81%
5 to 9 years	47,900	6.91%, see rank	6.91%	7.30%
10 to 14 years	46,495	6.70%, see rank	6.91%	7.29%
15 to 19 years	45,065	6.50%, see rank	7.15%	7.18%
20 to 24 years	44,022	6.35%, see rank	7.00%	6.74%
25 to 34 years	98,072	14.14%, see rank	14.06%	14.18%
35 to 44 years	113,100	16.31%, see rank	15.90%	16.04%
45 to 54 years	97,858	14.11%, see rank	13.78%	13.39%
55 to 64 years	60,510	8.72%, see rank	9.22%	8.63%
65 to 74 years	49,967	7.20%, see rank	6.78%	6.54%
75 to 84	33,162	4.78%, see rank	4.27%	4.39%
85 years and over	10,853	1.56%, see rank	1.44%	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.