Cayey Municipio
Puerto Rico · County seat: Cayey · Active county or equivalent
FIPS code 72035 is Cayey Municipio, Puerto Rico. With a population of 41,509 (2022 ACS estimate), it ranks #20 in Puerto Rico and #1164 nationally. Cayey 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
72035
Population
41,509
2022 ACS · #1164 nationally
Density
799.3/mi²
people per sq mile
Land Area
52
sq miles
Urban/Rural
Metro — 1M+ population
RUCC 1
How This FIPS Code Works
The 5-digit FIPS code 72035 is formed by combining the 2-digit state identifier 72 (Puerto Rico) with the 3-digit county identifier 035. Together they uniquely identify Cayey Municipio in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 72035
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 72035.
Median Household Income
$26,704
ACS B19013_001E
Poverty Rate
39.8%
ACS B17001 (below poverty level)
Median Age
44.6
ACS B01002_001E
Metropolitan Area
Adjacent Counties (7)
Counties that share a border with Cayey Municipio. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 72035.
Federal Datasets Using Code 72035
FIPS code 72035 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 72035 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:035",
"in": "state:72",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Cayey Municipio, Puerto Rico, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '72035';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '72'
AND county_fips = '035';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 72035 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "72",
county = "035",
year = 2022
)ZIP Codes in Cayey 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 Cayey Municipio. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 00736 | 92.4% |
| 00784 | 1.6% |
| 00751 | 0.2% |