Jefferson County Population

1800–2026

14,863

2026 projection

5.2% since 2020 (decrease)

05K10K15K20K25K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Jefferson County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202614,863-1480.99%
202515,011-1480.98%
202415,159-1110.73%
202315,270-590.38%
202215,329-1611.04%
202115,490-1871.19%
202015,677+3332.17%
201915,344-790.51%
201815,423-2151.37%
201715,638-1350.86%

Showing 10 of 37 years.

Jefferson County Demographics

40.9median age

Median age

Female41.6 yrs
Male39.6 yrs

Adults

11,879
2,865 seniors (65+) · 24% of adults9,014 other adults

Sex

Female 51.7% · 7,938Male 48.3% · 7,403

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 153 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Jefferson County Income

$53,014median household income

Median household income

$53,014

Half of households earn more, half earn less

Median earnings

$35,868

Typical yearly pay for a worker 25 or older.

Poverty rate

16.9%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Jefferson County Marital Status

43% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married43%44%42%
Never married36%39%33%
Divorced12%12%12%
Widowed7%3%10%
Separated3%3%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201