Gallatin County, Illinois

Gallatin County population, land area and income

Gallatin County had 4,690 residents in the Census Vintage 2024 estimate, on 322.9 square miles of land. It ranks 98th of 102 in Illinois by population and 88th by land area. That works out to 14.5 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Illinois has 24,447 residents, so Gallatin County has 19% of the typical county's population.

Its SAIPE 2023 median household income of $56,852 is below the national county median among 3,143 counties with an estimate.

How Gallatin County's population changed since 2020

Gallatin County lost 255 residents between the July 2020 and July 2024 estimates, a drop of 5.2%. That ranks 100th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, Gallatin County recorded 184 births and 387 deaths, a natural change of -203. Net international migration added +1 and net domestic migration, people moving to or from other US counties, came to -62. The largest single component was natural change, which removed 203 people.

Where Gallatin County is

The Census internal point of Gallatin County is at 37.768700, -88.228000. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Gallatin County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Gallatin County

No incorporated place of 1,000 or more people has residents in Gallatin County. Its 4,690 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Gallatin County

The Census 2024 county adjacency file lists 6 neighbors for Gallatin County, including 2 across a state line. The most populous is Posey County, IN, with 25,067 residents. Distances run between Census internal points in a straight line.

• IN

  Posey County, IN

  25,067 people

  27 mi NE

• Saline County

  22,826 people

  17 mi W

• White County

  13,395 people

  22 mi N

• KY

  Union County, KY

  13,178 people

  17 mi ESE

• Hamilton County

  7,818 people

  28 mi NW

• Hardin County

  3,550 people

  17 mi S

Distance to Springfield and the nearest big city

Springfield is 158.7 miles NNW of Gallatin County's internal point in a straight line. The nearest place of 100,000 or more is Evansville, IN (population 115,395), 40.7 miles away. The nearest place of 10,000 or more is Henderson, KY (population 27,750), 35.7 miles away.

Gallatin County FIPS code

The FIPS code of Gallatin County is 17059: state code 17 for Illinois plus county code 059. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $56,852.