San Sebastián Municipio, Puerto Rico Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 23rd-largest in Puerto Rico
The population of San Sebastián Municipio, Puerto Rico is 39,168 as of the 2023 American Community Survey, making it the 23rd-largest county in Puerto Rico. The median household income is $17,834, the median home value is $110,500, and the median age is 46.5.
39,168
Population
556
People / sq mi
$17,834
Median Income
$110,500
Median Home Value
San Sebastián Municipio covers 70 sq mi of land at 556.2 people per square mile.
About San Sebastián Municipio,
San Sebastián Municipio is a county in Puerto Rico with a population of 39,168. It ranks #23 among counties in Puerto Rico by population. The median age is 46.5, older than the national median. The population is 48.6% male and 51.4% female.
The median household income in San Sebastián Municipio is $17,834, below the US median of $74,580. 48.0% of residents live below the federal poverty level. Home values sit at a median of $110,500, with monthly rent averaging $481. The homeownership rate of 71.2% is higher than the national rate of 64.8%.
Roughly 3.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 26.2 minutes each way.
Race & Ethnicity
| White | 71.8% |
| Black or African American | 2.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.1% |
| Two or More Races | 0.0% |
Age & Sex
46.5
Median Age
51.4%
Female
48.6%
Male
25.4%
Age 65+
Age Distribution
Children (under 15): 13.2% · Seniors (65+): 25.4%
Income & Poverty
| Median household income | $17,834 |
| Mean household income | $27,976 |
| Per-capita income | $11,827 |
| Poverty rate | 48.0% |
| Unemployment rate | 5.4% |
| Employment-to-population | 33.8% |
Top Industries by Employment
The largest employment sector in San Sebastián Municipio is professional & business services, accounting for 25.5% of workers.
How residents commute
0.0%
Drive alone
5.0%
Carpool
81.7%
Public transit
3.2%
Work from home
26.2 min
Avg commute
Housing
$110,500
Median home value
$481
Median rent
71.2%
Homeownership rate
18,533
Total housing units
76.8%
Occupied
23.2%
Vacant
28.8%
Renter-occupied
Social & access
94.7%
With health insurance
Education
-
High School+
-
Bachelor's+
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Frequently Asked Questions
San Sebastián Municipio, Puerto Rico has a population of 39,168 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 23rd-largest county in Puerto Rico. Population density is 556 people per square mile.
The median household income in San Sebastián Municipio, Puerto Rico is $17,834, with mean (average) household income of $27,976 and per-capita income of $11,827. 48.0% of residents live below the federal poverty level.
In San Sebastián Municipio, the largest racial and ethnic groups are White (71.8%), Hispanic or Latino (3.1%), Black or African American (2.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in San Sebastián Municipio, Puerto Rico is 46.5 years. Residents are 51.4% female and 48.6% male.
The median home value in San Sebastián Municipio is $110,500 and median monthly rent is $481. 71.2% of occupied housing units are owner-occupied. The county has 18,533 total housing units, 23.2% of which are vacant.
The largest employment sector in San Sebastián Municipio, Puerto Rico is professional, scientific, and management services, employing 25.5% of workers. The unemployment rate is 5.4%.
San Juan is among the largest cities associated with San Sebastián Municipio, Puerto Rico, with a population of 320,691.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.