• county
  • FIPS 12117
  • Largest town: Sanford

Seminole County, Florida

Seminole County had 494,605 residents in the Census Vintage 2024 estimate, on 309.4 square miles of land. It ranks 13th of 67 in Florida by population and 64th by land area.

Population
494,605
#13 of 67 in Florida · #151 in US
Area
309.4 sq mi
#64 of 67 in Florida · #2,786 in US
Density
1,599 / sq mi
#4 of 67 in Florida · #100 in US
Median household income
$80,698
#10 of 67 in Florida · #458 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Seminole County within Florida. Pin: Tallahassee.

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Seminole County population, land area and income

Seminole County had 494,605 residents in the Census Vintage 2024 estimate, on 309.4 square miles of land. It ranks 13th of 67 in Florida by population and 64th by land area. That works out to 1,598.7 people per square mile, 16.6 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Florida has 154,693 residents, so Seminole County is 3.2 times that size.

Its SAIPE 2023 median household income of $80,698 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

494,605

3144th1st

151st of 3,144 (US)

Land area

309 sq mi

3144th1st

2786th of 3,144 (US)

Density

1,598.7 / sq mi

3144th1st

100th of 3,144 (US)

Median household income

$80,698

3143rd1st

458th of 3,143 (US)

Rank within Florida (67)

Population

494,605

67th1st

13th of 67 (FL)

Land area

309 sq mi

67th1st

64th of 67 (FL)

Density

1,598.7 / sq mi

67th1st

4th of 67 (FL)

Median household income

$80,698

67th1st

10th of 67 (FL)

How Seminole County's population changed since 2020

Seminole County gained 23,133 residents between the July 2020 and July 2024 estimates, a rise of 4.9%. That ranks 46th of 67 in Florida for growth. The median Florida county changed by +7.8%, and the state as a whole by +8.2%.

Since the April 2020 estimates base, Seminole County recorded 19,447 births and 17,659 deaths, a natural change of +1,788. Net international migration added +17,698 and net domestic migration, people moving to or from other US counties, came to +3,860. The largest single component was international migration, which added 17,698 people.

471.5k2020470.9k2021481.1k2022489.3k2023494.6k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
19,447
Deaths
17,659
Net international migration
+17,698
Net domestic migration
+3,860
Change, July 2023 to July 2024
+5,351

Where Seminole County is

The Census internal point of Seminole County is at 28.690100, -81.132000. It sits in UTM zone 17N. The map shades Florida's 67 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Seminole County outlined. Dots are towns of 1,000+ people with residents in it.

Escambia County: +2.7%Okaloosa County: +4.0%St. Lucie County: +17.9%Okeechobee County: +6.8%DeSoto County: +7.8%Bradford County: -0.5%Bay County: +14.4%Holmes County: +1.6%Gilchrist County: +13.1%Manatee County: +14.1%Hardee County: +2.9%Lafayette County: +5.0%Flagler County: +17.9%Nassau County: +14.7%Pasco County: +16.4%Martin County: +4.4%Palm Beach County: +5.9%Alachua County: +4.3%Lee County: +12.5%Brevard County: +8.2%Polk County: +16.8%Pinellas County: +0.6%Highlands County: +8.3%Hamilton County: +4.4%Wakulla County: +9.5%Clay County: +8.1%Suwannee County: +9.2%Madison County: +2.9%Columbia County: +6.0%Jackson County: +6.1%Calhoun County: -3.1%Franklin County: +4.0%Gulf County: +11.3%Hernando County: +11.5%Washington County: +4.7%Levy County: +10.9%Liberty County: +1.9%Putnam County: +5.3%Volusia County: +8.5%Walton County: +18.2%Osceola County: +19.7%Leon County: +2.2%Union County: +2.0%Sarasota County: +9.2%Dixie County: +5.6%Charlotte County: +12.8%Indian River County: +7.3%Broward County: +4.8%Hendry County: +16.1%Sumter County: +18.7%Miami-Dade County: +5.3%Citrus County: +10.1%Seminole County: +4.9%Lake County: +15.0%Marion County: +13.6%St. Johns County: +20.9%Gadsden County: +1.7%Jefferson County: +10.5%Baker County: +4.3%Glades County: +8.7%Collier County: +10.3%Duval County: +5.7%Taylor County: +0.4%Monroe County: -2.3%Hillsborough County: +7.8%Santa Rosa County: +9.9%Orange County: +7.1%
Change 2020 to 2024
  1. < +4.0%
  2. < +5.7%
  3. < +8.7%
  4. < +13.1%
  5. ≥ +13.1%
no data

Orange pin: Seminole County internal point. Dark pin: Tallahassee.

Internal point

Decimal
28.690100, -81.132000
DMS
28°41'24.36"N 81°07'55.20"W
UTM
17N 487105.0E 3173659.3N
Geohash
djn71yc7z
Plus code
76WWMVR9+26

Towns in Seminole County

7 incorporated places of 1,000+ people have residents in Seminole County, 261,631 people together, or 53% of the county. Each figure counts only the part of the town inside Seminole County; towns marked "part" extend into another county. The largest is Sanford with 66,919.

  1. 01Sanford66,919
  2. 02Altamonte Springs47,261
  3. 03Oviedo41,901
  4. 04Winter Springs39,822
  5. 05Casselberry31,650
  6. 06Longwood17,089
  7. 07Lake Mary16,989
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Seminole County

The Census 2024 county adjacency file lists 4 neighbors for Seminole County. The most populous is Orange County, FL, with 1,533,646 residents. Distances run between Census internal points in a straight line.

Distance to Tallahassee and the nearest big city

Tallahassee is 224.5 miles WNW of Seminole County's internal point in a straight line. The nearest place of 100,000 or more is Deltona, FL (population 100,513), 15.6 miles away. The nearest place of 10,000 or more is Oviedo, FL (population 41,901), 3.9 miles away.

Seminole County FIPS code

The FIPS code of Seminole County is 12117: state code 12 for Florida plus county code 117. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $80,698.

Questions people ask

What is the population of Seminole County, Florida?

The Census Vintage 2024 estimate for July 1, 2024 is 494,605. That is up 23,133 people (4.9%) from the July 2020 estimate of 471,472.

What is the FIPS code of Seminole County?

12117. The first two digits (12) are Florida; the last three (117) identify the county.

What is the largest town in Seminole County?

Sanford, with 66,919 residents inside Seminole County in 2024.

Which counties border Seminole County?

4 county-equivalents border it in the Census 2024 adjacency file: Orange County, FL; Brevard County, FL; Volusia County, FL; Lake County, FL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.