• county
  • FIPS 12085
  • Largest town: Stuart

Martin County, Florida

Martin County had 165,666 residents in the Census Vintage 2024 estimate, on 543.8 square miles of land. It ranks 33rd of 67 in Florida by population and 55th by land area.

Population
165,666
#33 of 67 in Florida · #423 in US
Area
543.8 sq mi
#55 of 67 in Florida · #1,918 in US
Density
305 / sq mi
#27 of 67 in Florida · #429 in US
Median household income
$76,430
#17 of 67 in Florida · #608 in US

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

Martin County within Florida. Pin: Tallahassee.

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Martin County population, land area and income

Martin County had 165,666 residents in the Census Vintage 2024 estimate, on 543.8 square miles of land. It ranks 33rd of 67 in Florida by population and 55th by land area. That works out to 304.6 people per square mile, 3.2 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Florida has 154,693 residents, about the same as Martin County.

Its SAIPE 2023 median household income of $76,430 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

165,666

3144th1st

423rd of 3,144 (US)

Land area

544 sq mi

3144th1st

1918th of 3,144 (US)

Density

304.6 / sq mi

3144th1st

429th of 3,144 (US)

Median household income

$76,430

3143rd1st

608th of 3,143 (US)

Rank within Florida (67)

Population

165,666

67th1st

33rd of 67 (FL)

Land area

544 sq mi

67th1st

55th of 67 (FL)

Density

304.6 / sq mi

67th1st

27th of 67 (FL)

Median household income

$76,430

67th1st

17th of 67 (FL)

How Martin County's population changed since 2020

Martin County gained 6,997 residents between the July 2020 and July 2024 estimates, a rise of 4.4%. That ranks 49th 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, Martin County recorded 5,373 births and 9,940 deaths, a natural change of -4,567. Net international migration added +2,920 and net domestic migration, people moving to or from other US counties, came to +8,832. The largest single component was domestic migration, which added 8,832 people.

158.7k2020159.9k2021162.4k2022164.2k2023165.7k2024
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
5,373
Deaths
9,940
Net international migration
+2,920
Net domestic migration
+8,832
Change, July 2023 to July 2024
+1,425

Where Martin County is

The Census internal point of Martin County is at 27.083600, -80.398200. 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 Martin 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: Martin County internal point. Dark pin: Tallahassee.

Internal point

Decimal
27.083600, -80.398200
DMS
27°05'0.96"N 80°23'53.52"W
UTM
17N 559664.1E 2995837.4N
Geohash
dhyf46rv6
Plus code
76VX3JM2+CP

Towns in Martin County

3 incorporated places of 1,000+ people have residents in Martin County, 28,448 people together, or 17% of the county. Each figure counts only the part of the town inside Martin County; towns marked "part" extend into another county. The largest is Stuart with 19,566.

  1. 01Stuart19,566
  2. 02Indiantown6,810
  3. 03Sewall's Point2,072
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Martin County

The Census 2024 county adjacency file lists 5 neighbors for Martin County. The most populous is Palm Beach County, FL, with 1,582,055 residents. Distances run between Census internal points in a straight line.

Distance to Tallahassee and the nearest big city

Tallahassee is 330.1 miles NW of Martin County's internal point in a straight line. The nearest place of 100,000 or more is Port St. Lucie, FL (population 258,575), 13.6 miles away. The nearest place of 10,000 or more is Stuart, FL (population 19,566), 12.2 miles away.

Martin County FIPS code

The FIPS code of Martin County is 12085: state code 12 for Florida plus county code 085. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $76,430.

Questions people ask

What is the population of Martin County, Florida?

The Census Vintage 2024 estimate for July 1, 2024 is 165,666. That is up 6,997 people (4.4%) from the July 2020 estimate of 158,669.

What is the FIPS code of Martin County?

12085. The first two digits (12) are Florida; the last three (085) identify the county.

What is the largest town in Martin County?

Stuart, with 19,566 residents inside Martin County in 2024.

Which counties border Martin County?

5 county-equivalents border it in the Census 2024 adjacency file: Palm Beach County, FL; St. Lucie County, FL; Hendry County, FL; Okeechobee County, FL; Glades 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.