400,128
July 1, 2025 population estimate
↑ 2.5% since April 20209,783 more residents than the V2025 estimates base of 390,345.
466.52 square miles of land (2020)
2010 land area: 467.06 sq. mi.
Published area difference: -0.54 sq. mi.
Wednesday, September 23, 2026Updated September 23, 2026 · 8:33 AM ET
The Butler Brief
Our three counties
Population, growth and geographic size from the U.S. Census Bureau.
838,418
July 1, 2025 population estimate
↑ 0.9% since April 20207,787 more residents than the V2025 estimates base of 830,631.
405.41 square miles of land (2020)
2010 land area: 405.91 sq. mi.
Published area difference: -0.50 sq. mi.
257,181
July 1, 2025 population estimate
↑ 6.1% since April 202014,836 more residents than the V2025 estimates base of 242,345.
401.43 square miles of land (2020)
2010 land area: 401.31 sq. mi.
Published area difference: +0.12 sq. mi.
Population comparisons use the same V2025 series, including its revised 2020 base. Land-area differences compare Census measurements from 2010 and 2020; they do not establish a recent boundary change. Checked September 23, 2026.