Knox County Population

1800–2026

29,412

2026 projection

2.6% since 2020 (decrease)

05K10K15K20K25K30K35K18001850190019502000

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 Knox County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202629,412-1200.41%
202529,532-1200.40%
202429,652-440.15%
202329,696-250.08%
202229,721-2980.99%
202130,019-1670.55%
202030,186-9653.10%
201931,151-1750.56%
201831,326-1350.43%
201731,461-200.06%

Showing 10 of 37 years.

Knox County Demographics

39.7median age

Median age

Female40.6 yrs
Male38.4 yrs

Adults

22,812
5,203 seniors (65+) · 23% of adults17,609 other adults

Sex

Female 51.5% · 15,368Male 48.5% · 14,497

Population by age

MaleFemale85+ years, male: 14485+ years, female: 35380–84 years, male: 28480–84 years, female: 56075–79 years, male: 47375–79 years, female: 43570–74 years, male: 51370–74 years, female: 85565–69 years, male: 84165–69 years, female: 74560–64 years, male: 95560–64 years, female: 1,08655–59 years, male: 96055–59 years, female: 93850–54 years, male: 97750–54 years, female: 1,01045–49 years, male: 91745–49 years, female: 94440–44 years, male: 96140–44 years, female: 89835–39 years, male: 76535–39 years, female: 82830–34 years, male: 96830–34 years, female: 99525–29 years, male: 1,00925–29 years, female: 91320–24 years, male: 94620–24 years, female: 83515–19 years, male: 97015–19 years, female: 96410–14 years, male: 1,01810–14 years, female: 9455–9 years, male: 8855–9 years, female: 1,1530–4 years, male: 9110–4 years, female: 91185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

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 299 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

Knox County Income

$32,527median household income

Median household income

$32,527

Half of households earn more, half earn less

Median earnings

$34,067

Typical yearly pay for a worker 25 or older.

Poverty rate

36.9%

About 1 in 3 residents

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

Knox County Marital Status

46% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married46%46%46%
Never married26%33%19%
Divorced16%14%19%
Widowed8%4%11%
Separated4%2%5%

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

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year