COUNTY · FL

Hillsborough County, Florida

Hillsborough County is a county in Florida with FIPS code 12057 and an estimated population of 1,535,564 (Census 2023), 3rd largest of 67 in the state.

County facts

Name: Hillsborough County
State: Florida
Type: county
FIPS code: 12057
State FIPS: 12
Population (2023): 1,535,564
Change since 2020: +4.7%
State rank: 3 of 67

Population is the Census Bureau’s Vintage 2023 estimate.

Major cities in Hillsborough County

Tampa

Other counties in Florida

Miami-Dade County Broward County Palm Beach County Orange County Duval County Pinellas County Lee County Polk County All 67

Questions

What is the FIPS code for Hillsborough County?

Hillsborough County, Florida has the five-digit FIPS code 12057: 12 for the state and 057 for the county.

What state is Hillsborough County in?

Hillsborough County is in Florida.

How do I know if an address is in this county?

Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.

Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.