Lewis County Population

1850–2026

88,993

2026 projection

7.8% since 2020 (increase)

020K40K60K80K100K186018801900192019401960198020002020

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 Lewis County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202688,993+9311.06%
202588,062+9311.07%
202487,131+8540.99%
202386,277+9841.15%
202285,293+7170.85%
202184,576+2,0252.45%
202082,551+1,9522.42%
201980,599+1,1331.43%
201879,466+1,1971.53%
201778,269+1,5602.03%

Showing 10 of 32 years.

Lewis County Demographics

42.2median age

Median age

Female43 yrs
Male40.9 yrs

Adults

66,731
18,211 seniors (65+) · 27% of adults48,520 other adults

Sex

Female 49.7% · 42,315Male 50.3% · 42,839

Population by age

MaleFemale85+ years, male: 89585+ years, female: 89580–84 years, male: 97580–84 years, female: 1,02575–79 years, male: 1,49175–79 years, female: 2,00070–74 years, male: 2,54770–74 years, female: 2,62765–69 years, male: 2,81965–69 years, female: 2,93760–64 years, male: 2,87560–64 years, female: 3,72155–59 years, male: 2,89155–59 years, female: 2,26750–54 years, male: 2,60250–54 years, female: 2,50545–49 years, male: 2,49445–49 years, female: 2,33540–44 years, male: 2,39340–44 years, female: 2,54835–39 years, male: 2,93235–39 years, female: 2,75330–34 years, male: 2,73130–34 years, female: 2,57025–29 years, male: 2,46625–29 years, female: 2,49720–24 years, male: 2,25320–24 years, female: 1,99515–19 years, male: 2,66815–19 years, female: 2,23810–14 years, male: 2,69210–14 years, female: 2,4895–9 years, male: 2,6725–9 years, female: 2,5440–4 years, male: 2,4430–4 years, female: 2,36985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K3K3K

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 852 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

Lewis County Income

$74,796median household income

Median household income

$74,796

Half of households earn more, half earn less

Median earnings

$49,424

Typical yearly pay for a worker 25 or older.

Poverty rate

12.2%

About 1 in 8 residents

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

Lewis County Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%50%52%
Never married26%30%21%
Divorced15%15%15%
Widowed7%4%10%
Separated1%1%1%

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