County · Puerto Rico
San Sebastián Municipio, Puerto Rico
San Sebastián Municipio, Puerto Rico. San Sebastián Municipio had 39,019 residents in 2025 by the Census Bureau's estimate, down 0.8% since 2020, a smaller fall than Puerto Rico's (−3.1%). It holds 3 places (3 census-designated) and 9 census tracts. GEOID 72131.
San Sebastián Municipio is one of the 7 counties of the Aguadilla, PR metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
39,019
Census Bureau estimate (no margin published)
2020 Census count: 39,345 · ACS 2020-2024: 39,088
Median household income
$19,920
±$1,708 (90% margin)
Puerto Rico: $26,297
Median home value
$115,000
±$8,204 (90% margin)
Puerto Rico: $131,500
Median gross rent
$508
±$36 (90% margin)
Puerto Rico: $578
How many people live in San Sebastián Municipio, and is it growing?
The 2020 Census counted 39,345 residents in San Sebastián Municipio. The Census Bureau estimates 39,019 for July 1, 2025, down 0.8% since 2020, a smaller fall than Puerto Rico's (−3.1%). The 2020-2024 American Community Survey puts the population at 39,088 over 70 square miles of land.
| Measure | San Sebastián Municipio | Puerto Rico | Change since 2015-2019 |
|---|---|---|---|
| Total population | 39,088 | 3,234,309 | +1,968 |
| Housing units | 19,193±561 | 1,634,357 | +1,183 |
San Sebastián Municipio's population since 2000
From 44,204 in 2000 to 39,019 in 2025: down 11.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in San Sebastián Municipio?
San Sebastián Municipio holds 3 places: 3 census-designated places. The largest is San Sebastián zona urbana with 9,038 residents (2020-2024). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| San Sebastián zona urbana | 8,470 | $21,684 |
|---|---|---|
| JuncalGEOID 7239470 | 994 | $16,000 |
| Hato ArribaGEOID 7233597 | 764 | $12,675 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in San Sebastián Municipio?
The median resident of San Sebastián Municipio is 47.0 years old; 16.2% are under 18 and 26.2% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 98.7%, then non-Hispanic white residents at 1.0%.
| Measure | San Sebastián Municipio | Puerto Rico | Change since 2015-2019 |
|---|---|---|---|
| Median age | 47.0±0.3 | 44.8 | +2.9 |
| Under 18 years | 16.2% | 16.1% | – |
| 65 years and over | 26.2% | 23.4% | – |
| Hispanic or Latino (any race) | 98.7%±0.6 pts | 99.0% | +2.1 pts |
| White alone, not Hispanic | 1.0%±0.6 pts | 0.6% | −1.7 pts |
| Black or African American alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Asian alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Some other race alone, not Hispanic | 0.3%±0.4 pts | 0.1% | – |
| No health insurance coverage | 4.7%±1.1 pts | 5.7% | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in San Sebastián Municipio earn?
Half of San Sebastián Municipio's households earn less than $19,920 a year (±$1,708), against $26,297 in Puerto Rico. In 2015-2019 it was $18,868 in 2024 dollars; the margins of error cannot tell the two periods apart. 49.7% of residents live below the poverty line.
| Measure | San Sebastián Municipio | Puerto Rico | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $19,920±$1,708 | $26,297 | no clear change |
| Mean household income | $29,634±$2,137 | $41,994 | – |
| Per capita income | $12,443±$802 | $17,981 | no clear change |
| People below the poverty line | 49.7%±4.5 pts | 40.5% | no clear change |
| Children under 18 below the poverty line | 63.1%±8.6 pts | 54.9% | no clear change |
| Households receiving SNAP | 60.9%±3.5 pts | 47.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in San Sebastián Municipio?
Owners occupy 74.7% of San Sebastián Municipio's occupied homes and renters 25.3%. The median owner-occupied home is valued at $115,000 by its owner (±$8,204). The median renter pays $508 a month including utilities, and 42.6% of renters pay 35% or more of their income on rent.
| Measure | San Sebastián Municipio | Puerto Rico | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $115,000±$8,204 | $131,500 | no clear change |
| Median gross rent | $508±$36 | $578 | no clear change |
| Renters paying 35% or more of income on rent | 42.6%±8.6 pts | 42.3% | no clear change |
| Median monthly owner costs, with a mortgage | $738±$66 | $946 | – |
| Owner-occupied homes | 74.7%±3.0 pts | 67.9% | +10.2 pts |
| Housing units | 19,193±561 | 1,634,357 | +1,183 |
| Homeowner vacancy rate | 1.9%±1.1 pts | 1.3% | – |
| Rental vacancy rate | 14.4%±4.3 pts | 5.1% | – |
| Single-family detached homes | 83.4%±2.2 pts | 68.0% | – |
| Mobile homes | 0.0%±0.1 pts | 0.2% | – |
| Built 2020 or later | 0.1%±0.2 pts | 0.2% | – |
| Built 1939 or earlier | 2.6%±1.0 pts | 1.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in San Sebastián Municipio get to work?
83.4% of San Sebastián Municipio's workers drive alone. The average trip to work takes 25.9 minutes. The unemployment rate in 2020-2024 averaged 13.0%.
| Measure | San Sebastián Municipio | Puerto Rico | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 38.3%±2.2 pts | 46.4% | – |
| Unemployment rate | 13.0%±2.6 pts | 10.7% | −7.0 pts |
| Drove alone to work | 83.4%±4.0 pts | 82.6% | – |
| Carpooled | 7.6%±3.0 pts | 6.4% | – |
| Public transportation | 0.2%±0.4 pts | 0.9% | – |
| Walked | 4.8%±1.8 pts | 2.4% | – |
| Worked from home | 3.1%±2.3 pts | 6.1% | – |
| Mean travel time to work | 25.9 min±2.4 | 28.0 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are San Sebastián Municipio's census tracts?
San Sebastián Municipio is divided into 9 census tracts. Among those with a reliable estimate, median household income runs from $16,556 (Tract 9587) to $23,375 (Tract 9590).
| Tract 9272131009200 | 2,151±525 | $20,511 |
|---|---|---|
| Tract 958572131958500 | 4,464±669 | $22,438 |
| Tract 958772131958700 | 4,955±878 | $16,556 |
| Tract 958872131958800 | 5,997±1,023 | $18,913 |
| Tract 958972131958900 | 3,021±685 | $20,583 |
| Tract 959072131959000 | 3,866±768 | $23,375 |
| Tract 959272131959200 | 4,650±902 | $18,971 |
| Tract 959372131959300 | 4,283±901 | $21,449 |
| Tract 959572131959500 | 5,701±1,019 | $20,550 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does San Sebastián Municipio compare with Puerto Rico's other counties?
| Measure | Rank |
|---|---|
| Population | 23rd of 78 |
| Growth 2020-2025 | 14th of 78 |
| Residents per square mile | 56th of 78 |
| Median household income | 67th of 78 |
| Median home value | 42nd of 78 |
| Median gross rent | 50th of 78 |
| Poverty rate | 18th of 78 |
| Median age | 13th of 78 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for San Sebastián Municipio are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.