Martin County Population

1880–2026

5,281

2026 projection

0.4% since 2020 (increase)

01K2K3K4K5K6K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Martin County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20265,281-30.06%
20255,284-30.06%
20245,287+100.19%
20235,277+100.19%
20225,267+490.94%
20215,218-410.78%
20205,259-4848.43%
20195,743+751.32%
20185,668+1422.57%
20175,526-1011.79%

Showing 10 of 29 years.

Martin County Demographics

37.3median age

Median age

Female41.3 yrs
Male36.1 yrs

Adults

3,660
570 seniors (65+) · 16% of adults3,090 other adults

Sex

Female 41.7% · 2,176Male 58.3% · 3,042

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 52 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Martin County Income

$93,734median household income

Median household income

$93,734

Half of households earn more, half earn less

Median earnings

$59,848

Typical yearly pay for a worker 25 or older.

Poverty rate

8.3%

About 1 in 12 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Martin County Marital Status

52% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married52%48%57%
Never married29%34%22%
Divorced8%8%7%
Widowed10%8%14%
Separated2%3%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201