Gallia County Population

1810–2026

29,188

2026 projection

0.1% since 2020 (decrease)

05K10K15K20K25K30K35K1850190019502000

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 Gallia County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202629,188+1160.40%
202529,072+1160.40%
202428,956+150.05%
202328,941-180.06%
202228,959-2440.84%
202129,203-230.08%
202029,226-6242.09%
201929,850-1060.35%
201829,956-2000.66%
201730,156-570.19%

Showing 10 of 36 years.

Gallia County Demographics

41.4median age

Median age

Female42.3 yrs
Male40 yrs

Adults

22,211
5,790 seniors (65+) · 26% of adults16,421 other adults

Sex

Female 51% · 14,812Male 49% · 14,256

Population by age

MaleFemale85+ years, male: 11885+ years, female: 43980–84 years, male: 42780–84 years, female: 40275–79 years, male: 44375–79 years, female: 57470–74 years, male: 73770–74 years, female: 72465–69 years, male: 91765–69 years, female: 1,00960–64 years, male: 1,00560–64 years, female: 1,30155–59 years, male: 87555–59 years, female: 73550–54 years, male: 93350–54 years, female: 89845–49 years, male: 80145–49 years, female: 82040–44 years, male: 87540–44 years, female: 93635–39 years, male: 79835–39 years, female: 75530–34 years, male: 88530–34 years, female: 87525–29 years, male: 78925–29 years, female: 77220–24 years, male: 85620–24 years, female: 85315–19 years, male: 96815–19 years, female: 93910–14 years, male: 76110–14 years, female: 6785–9 years, male: 1,1955–9 years, female: 1,2070–4 years, male: 8730–4 years, female: 89585+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 291 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

Gallia County Income

$56,830median household income

Median household income

$56,830

Half of households earn more, half earn less

Median earnings

$43,772

Typical yearly pay for a worker 25 or older.

Poverty rate

16.4%

About 1 in 6 residents

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

Gallia County Marital Status

54% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married54%54%54%
Never married25%28%21%
Divorced12%11%13%
Widowed8%3%12%
Separated2%3%<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