Duval County is in northeastern Florida on the Atlantic coast. Jacksonville is the county seat and principal city, with the St. Johns River running through the area.
Duval County facts
County estimates: American Community Survey (ACS) 2020–2024 5-year release. Boundary and land area: U.S. Census Bureau TIGERweb. Data may change as sources are updated.
Interactive Duval County map
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Map tiles © OpenStreetMap contributors. Map boundaries are not legal property lines. Scroll-wheel zoom is disabled to make page scrolling easier.
Where is Duval County?
Duval County is in northeastern Florida on the Atlantic coast. Jacksonville is the county seat and principal city, with the St. Johns River running through the area.
Jacksonville and Duval County have a consolidated government, although certain beach communities retain separate municipal governments. County boundaries therefore deserve separate attention from general references to the City of Jacksonville.
The St. Johns River, coastal areas, and inland neighborhoods all contribute to the county’s geography. Census county estimates summarize the county as a whole rather than describing an individual Jacksonville district.
Duval County FIPS code and county seat
Duval County’s five-digit FIPS code is 12031. Its first two digits, 12, identify Florida; the last three digits, 031, identify the county. The full five-digit code should be retained when joining public geographic datasets.
Jacksonville is the county seat. The county seat is the administrative center for county government. It does not necessarily represent the largest city or the location of every service. County FIPS identifiers should not be confused with ZIP Codes, city boundaries, or school districts.
Population, household income, and housing estimates
Population, median household income, median home value, median age, and poverty data on this page are drawn from the 2020–2024 American Community Survey (ACS) five-year release. These are estimates, with sampling error, rather than a real-time census. Household income and owner-occupied home value use the inflation-adjusted dollar basis of the ACS release. A countywide median is not a quote for an individual household or property.
County boundary and land-area data use the Census Bureau’s TIGERweb geography layer. Population density is calculated from the ACS population estimate and mapped land area. Geographic boundaries may have a different vintage from demographic data, so small differences between data sources are possible. Land-area figures exclude water area.
How to use the interactive county map
Use the interactive map above to inspect the county’s outline. Drag to pan and use the zoom buttons to explore the boundary in its wider region. The map is a general geographic reference: it is not a legal survey, tax-parcel map, flood map, election precinct map, or emergency-service boundary. Consult the relevant government authority before making jurisdictional decisions.
If the county boundary service cannot load, the map area displays a status message. The county seat and FIPS code remain visible without the external services.
Compare Duval County with other Florida counties
You can explore Orange County and Hillsborough County, or use the side-by-side county comparison tool to select two counties and compare income, population, housing, and density. Differences in medians and area do not by themselves establish which county is better for every household or business.
Frequently asked questions
Is Jacksonville the same thing as Duval County?
Jacksonville and Duval County have a consolidated local government, with some separate municipalities remaining. The Census county FIPS code 12031 identifies Duval County for county-level statistics.
What is the county FIPS code for Duval County?
The five-digit code is 12031. You can search it with our County FIPS Code Lookup tool. Leading zeros, when present, are part of the identifier.
Why might the county population or map show unavailable?
The statistics and map load from external Census-related services. If the services fail or load slowly, the page shows an unavailable or retry message rather than an invented value. For more detail, visit Data and Methodology.
Sources and related county tools
Sources: U.S. Census Bureau ACS, Census TIGERweb, and Census QuickFacts. You can also explore the Florida county directory, ZIP Code to County Finder, and What County Am I In? tool.