Martin County, Florida
Martin County, Florida, has 166,272 residents (July 2025 estimate). Its county seat is Stuart. It uses Eastern Time and covers 544 sq mi (1,409 km²) of land.
- Resident population, July 2025
- 166,272
- Land area
- 544 sq mi (1,409 km²)
- County seat or government
- Stuart
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $82,943 ± $2,984
- Median home value
- $432,200 ± $10,447
- Median rent, with utilities
- $1,569 ± $58
- Homes lived in by their owners
- 79.6% ± 1.0 points
- County type
- County
- Metro or micro area
- Port St. Lucie, FL metro areaCentral county
- Water area
- 209 sq mi (542 km²)
- State
- Florida
- County code (FIPS)
- 12085
- Coordinates (central point)
- 27.083604, -80.398201
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 Martin 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
- 3345855,512 people
- 3499747,075 people
- 3499030,592 people
- 3497423,975 people
- 3495723,462 people
- 3345520,018 people
- 3499418,737 people
- 3347814,731 people
- 3346914,686 people
- 3499610,653 people
- 349569,630 people
- 33438257 people
12 ZIP Code areas overlap Martin 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 Martin County, largest first
- Martin County School District162,176 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.
- Palm City, Florida (CDP)26,371 people
- Stuart, Florida (city)18,520 people
- Hobe Sound, Florida (CDP)13,817 people
- Jensen Beach, Florida (CDP)12,531 people
- Port Salerno, Florida (CDP)11,184 people
- Indiantown, Florida (village)6,695 people
- North River Shores, Florida (CDP)3,633 people
- Sewall's Point, Florida (town)1,938 people
- Rio, Florida (CDP)1,232 people
- Jupiter Island, Florida (town)845 people
- Ocean Breeze, Florida (town)777 people
Bordering areas, nearest first
Distances are straight lines between map points.
- St. Lucie County, Florida21 mi north
- Palm Beach County, Florida30 mi south
- Okeechobee County, Florida37 mi northwest
- Glades County, Florida50 mi west
- Hendry County, Florida60 mi southwest
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.