ZIP Codes of Las Marias County, PR

Population & People
Population & People
Total Population
8,512
Household Income
Household Income
Median Income
$16,367
Housing
Housing
Total Housing Units
4,095
Business & Economy
Business & Economy
Total Businesses
0
Employment
Employment
Employment Rate
34.12%
Education
Education
Bachelor's Degree+
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:1 ZIP Codes (1 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:787 / 939
Timezone:GMT -04:00
Local Time:2:13:36 PM
Population:8,512 [See All]
FIPS:72083
Land Area:34 sq mi
Water Area:0 sq mi
Coordinates:18.2565, -67.0304
Quick Link:
https://www.zip-codes.com/county/pr-las-marias.asp
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Notable population decline
Lost 10.2% of residents since 2014.

Standout ZIPs in this County


Most Populous
Las Marias · 8,512 people
100.0% of county total
Highest Income
Las Marias · $16,367 median
1.0× county average
Largest Land Area
Las Marias · 33.7 sq mi
Spans the most ground
Fastest Growth
Las Marias · -10.2% (10-yr)
9,478 → 8,512 residents
Most Educated
— no education data

Things worth knowing about Las Marias County


8,512 residents live across 1 ZIPs covering 34 sq mi, served by 1 distinct USPS-recognized cities.

Population moved from 9,478 to 8,512 from 2014 to 2024 — a -10.2% change. 0 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 00670 (Las Marias, $16,367 median) and poorest ZIP 00670 (Las Marias, $16,367) are 0.0 miles apart — a 1.0× income gap across local geography.

Within Puerto Rico, this is the #75 most populous of 78 counties and ranks #78 for median household income .

Weighted by population, the typical household earns about $16,367 across the county — reflecting what a typical resident sees, not a simple ZIP average.

1 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Las Marias County


Population decline

Las Marias County lost 10.2% of residents between 2014 and 2024. ZIPs that shed the largest share:

Las Marias
-10.2%
9,478 → 8,512 residents

All ZIP Codes in Las Marias County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
00670Las MariasStandard8,512$16,36733.7-10.2%

Adjacent & Nearby Counties