Toa Baja Municipio
Puerto Rico · County seat: Toa Baja · Active county or equivalent
FIPS code 72137 is Toa Baja Municipio, Puerto Rico. With a population of 74,854 (2022 ACS estimate), it ranks #8 in Puerto Rico and #742 nationally. Toa Baja Municipio is part of the San Juan-Bayamón-Caguas, PR. The state FIPS code for Puerto Rico is 72. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
72137
Population
74,854
2022 ACS · #742 nationally
Density
3,220.9/mi²
people per sq mile
Land Area
23
sq miles
Urban/Rural
Metro — 1M+ population
RUCC 1
How This FIPS Code Works
The 5-digit FIPS code 72137 is formed by combining the 2-digit state identifier 72 (Puerto Rico) with the 3-digit county identifier 137. Together they uniquely identify Toa Baja Municipio in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 72137
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 72137.
Median Household Income
$28,719
ACS B19013_001E
Poverty Rate
35.5%
ACS B17001 (below poverty level)
Median Age
42.6
ACS B01002_001E
Metropolitan Area
Adjacent Counties (5)
Counties that share a border with Toa Baja Municipio. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 72137.
Federal Datasets Using Code 72137
FIPS code 72137 appears as the county identifier in the following federal datasets. Analysts joining data across these sources use this code as the common geographic key.
Using FIPS Code 72137 in Code
Common patterns for querying federal datasets by this county's FIPS code. The leading zeros are significant — always treat FIPS codes as strings, not integers.
import requests
url = "https://api.census.gov/data/2022/acs/acs5"
params = {
"get": "NAME,B19013_001E,B01003_001E",
"for": "county:137",
"in": "state:72",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Toa Baja Municipio, Puerto Rico, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '72137';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '72'
AND county_fips = '137';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 72137 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "72",
county = "137",
year = 2022
)ZIP Codes in Toa Baja Municipio
ZIP codes do not align perfectly with county boundaries — a single ZIP code can span multiple counties, and a county can contain parts of many ZIP codes. The ratios below (from the Census 2020 ZCTA relationship file) show the land area share of each ZCTA that falls within Toa Baja Municipio. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 00951 | 100.0% |
| 00952 | 100.0% |
| 00949 | 95.9% |
| 00953 | 0.7% |
| 00959 | 0.3% |