Seminole County, Florida
Seminole County, Florida, has 491,884 residents (July 2025 estimate). Its county seat is Sanford. It uses Eastern Time and covers 309 sq mi (801 km²) of land.
- Resident population, July 2025
- 491,884
- Land area
- 309 sq mi (801 km²)
- County seat or government
- Sanford
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $85,761 ± $2,077
- Median home value
- $386,900 ± $3,956
- Median rent, with utilities
- $1,783 ± $15
- Homes lived in by their owners
- 66.2% ± 0.9 points
- County type
- County
- Metro or micro area
- Orlando-Kissimmee-Sanford, FL metro areaCentral county
- Water area
- 35.9 sq mi (93.1 km²)
- State
- Florida
- County code (FIPS)
- 12117
- Coordinates (central point)
- 28.690065, -81.131975
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Seminole County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 3276564,477 people
- 3277162,606 people
- 3270359,269 people
- 3279252,976 people
- 3270848,965 people
- 3274646,684 people
- 3270739,493 people
- 3271437,905 people
- 3281036,927 people
- 3277334,032 people
- 3277928,924 people
- 3275026,164 people
17 ZIP Code areas overlap Seminole County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Seminole County, largest first
- Seminole County School District481,470 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Sanford, Florida (city)63,730 people
- Altamonte Springs, Florida (city)46,116 people
- Oviedo, Florida (city)40,599 people
- Winter Springs, Florida (city)38,951 people
- Casselberry, Florida (city)30,135 people
- Wekiwa Springs, Florida (CDP)23,915 people
- Lake Mary, Florida (city)16,860 people
- Longwood, Florida (city)16,337 people
- Forest City, Florida (CDP)15,312 people
- Goldenrod, Florida (CDP)12,878 people
- Fern Park, Florida (CDP)7,981 people
- Heathrow, Florida (CDP)6,769 people
All 16
- Geneva, Florida (CDP)3,441 people
- Chuluota, Florida (CDP)2,187 people
- Midway, Seminole County, Florida (CDP)1,407 people
- Black Hammock, Florida (CDP)1,290 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Orange County, Florida17 mi southwest
- Volusia County, Florida25 mi north
- Lake County, Florida36 mi west
- Brevard County, Florida38 mi southeast
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.