ZIP Code 00631 in Castaner, PR

Data Last Updated: February 1, 2026
City:Castaner, Puerto Rico
City Alias:Adjuntas
County:Lares County
Timezone:Atlantic (GMT -04:00)
Local Time:8:41:11 PM
Population:1,414 [See All]
Area Codes:787 / 939
Classification:PO Box
Coordinates:18.2246, -66.8678
Land Area:3.126 sq mi
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00631 - Castaner, PR

ZIP Code 00631, Castaner

Small Town
LocationLares County, PR
Area2.2 sq mi
Population1,414
Households566
PO Boxes542 (96% adoption)
Median Age47.5 years
ZIP CreatedBefore Oct 2004
Key Facts
  • The post office maintains 542 PO Boxes for 566 occupied households, an adoption rate of 96%
  • This ZIP code covers 2.2 square miles in the mountainous interior of Lares, Puerto Rico
  • Only one street appears in postal records: Carr Principal, the main road through the area
  • The population of 1,414 lives in 566 households, with an average of 2.5 people per household
  • Median household income is $18,295, while the median home value is $102,900
  • The community has one city carrier route alongside the extensive PO Box service

Postal Infrastructure

The postal infrastructure here reflects the community's mixed delivery character. While the ZIP has one city carrier route serving Carr Principal (the main road), most residents rely on PO Boxes for their mail. This pattern is common in Puerto Rico's interior communities, where winding mountain roads and dispersed settlement patterns make PO Boxes a practical choice even when street delivery technically exists. The median household income of $18,295 and median home value of $102,900 show this is a working-class rural community where postal accessibility matters for daily life.

Street Name Patterns

Single Main Road

Only Carr Principal appears in postal records, reflecting the area's rural character with delivery concentrated along the main road while most residents use PO Boxes.

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Population & Demographics


ZIP Code 00631 has 1,414 residents and 566 households (average 2.42 persons per household). The median age is 47.5 years, slightly older than the state (45.2) and significantly older than the nation (38.8). The gender split is 46.6% male and 53.4% female, which is slightly lower than the national male share (49.1%), making this a female-majority area. Largest groups are Hispanic or Latino (99.5%) and Other / Two or More Races (30.3%, much higher than the national average of 8.4%); Hispanic or Latino residents make up 99.5%, which is much higher than the national average (18.7%), and Other / Two or More Races share is much higher than the national average (8.4%).

Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:1,414Source: Census DHC
2024 ACS Population Estimate:1,321Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:452.3 people per sq mile
Average Income:$19,278Source: Census ACS
Households:566Source: Census DHC
Average House Value:$99,800Source: Census ACS
Persons Per Household:2.42Source: Census DHC
Average Family Size:2.74Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--1,8361,8001,7471,8471,6641,6891,5551,5681,4991,4811,0981,4311,3571,321
Decennial Census1,852------------------1,414--------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 47.5

Male Median Age: 49.4

Female Median Age: 45.7

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male153451521925313244374248504633442828
Female333830324840444758404250835445272717
Total487281846765757910277849813310078715545
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:24811.66%
Black:361.69%
Hispanic:*1,40766.15%
Asian:10.05%
American Indian:60.28%
Hawaiian:00%
Other:42920.17%
Total:2,127100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:65946.61%49.4 years
Females:75553.39%45.7 years
Total:1,414100%47.5 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:00%
Native, born in PR, Island Areas, or abroad:00%
Foreign born, naturalized U.S. citizen:00%
Foreign born, not a U.S. citizen:00%
Total Population:0100%
Total Native Population:00%
Total Foreign-born Population:00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2024, the Median household income is $19,278, which is considerably lower than the national median ($78,538), is up $8,683 (82.0%) since 2011 and above its 2019 pre-pandemic level by $9,034. Family households earn a median of $19,516 versus $0 for nonfamily households (a difference of $19,516). By gender, male median income is $19,904 and female is $33,125, which is far less than the national female median ($53,445), with a current gap of $13,221 that has narrowed from 2011 to 2024. The labor-force participation rate is 37.6%, which is far less than the national rate (63.5%). The unemployment rate is 21.7%, which is much higher than the national rate (5.2%). The largest occupation group is Service (35.7%).

Explore More: Income Over Time Household Income Employment Status By Occupation

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type20112012201320142015201620172018201920202021202220232024
Median Household Income$10,595$11,651$11,596$9,613$7,854$7,948$9,632$9,681$10,244$11,476$15,234$15,658$18,295$19,278
Median Family Income$14,676$16,215$15,571$14,116$13,063$11,500$13,387$12,961$12,188$13,300$20,882$18,929$22,833$19,516
Median NonFamily Income$4,023$5,024$5,767$4,653$5,551$5,938$7,067$5,461$6,447$8,421$2,499$0$0$0
Median Male Income$35,441$37,734$21,667$20,043$14,519$21,528$23,750$25,043$26,076$25,160$17,031$18,105$20,455$19,904
Median Female Income$14,833$15,268$17,104$16,786$17,614$25,833$24,803$23,295$23,319$23,897$22,361$28,942$33,274$33,125
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:35029.41%
Unemployed:978.15%
Not In Labor Force:74362.44%
Total:1,190100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:12335.14%
Service:12535.71%
Sales and Office:4412.57%
Natural resources, construction, and maintenance:5816.57%
Production, transportation, and material moving:00.00%
Total Civilian Employed Population:350100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2024, the median home value is $99,800, which is considerably lower than the national median ($303,400), is up $3,400 (3.53%) since 2011 and above its 2019 pre-pandemic level by $12,300. The median gross rent is $336, which is far less than the national median ($1,348), is up $193 (134.97%) since 2011 and above its 2019 pre-pandemic level by $122. Of occupied housing, owners make up 65.11% (26.96% with a mortgage, 73.04% free-and-clear) and renters 34.89% - making this ZIP Code under national rental averages. The vacancy rate is 25.50%, which is far higher than the national rate (10.43%).

Explore More: Compare Home Value Home Value Over Time Rent & Over Time Housing Occupancy

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Home Value$96,400$97,300$94,000$85,000$74,900$80,000$86,300$84,700$87,500$91,000$87,800$98,300$102,900$99,800
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:6138.85%
$500 to $999:117.01%
$1,000 to $1,499:00.00%
$1,500 to $1,999:00.00%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:8554.14%
Total:157100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Rent$143$308$253$289$278$252$223$268$214$228$283$326$336$336
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):7917.56%
Owner Occupied (free and clear, no mortgage):21447.56%
Renter Occupied:15734.89%
Total Occupied Housing Units:450100%

Occupied Housing Units:45074.50%
Vacant Housing Units (not graphed):15425.50%
Total Housing Units:604100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:57495.03%
Multi-Family Units:304.97%
Other Units:00.00%
Total Housing Units:604100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


Insufficient data for educational attainment. The uninsured rate is 1.60%, which is far lower than the national rate (8.60%). Private coverage is 12.50%, which is far lower than the national rate (67.30%). Public coverage is 87.00%, which is far higher than the national rate (36.30%). The share of people in poverty is 51.90%, which is far higher than the national rate (8.70%), down 3.80 percentage points since 2011 and below its 2019 pre-pandemic level by 19.40 percentage points. This suggests a positive shift in the local economic and social landscape - higher incomes, steadier consumer demand, and a strengthening tax base. Insufficient data for school enrollment.

Explore More: Educational Attainment Health Insurance Poverty Over Time School Enrollment

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:00%
9th to 12th grade, no diploma:00%
High school graduate (includes equivalency):00%
Some college, no degree:00%
Associate's degree:00%
Bachelor's degree:00%
Graduate or professional degree:00%
Total:0100%
High school or higher:00%
Bachelor's degree or higher:00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:16112.39%
Public Insurance:1,11785.99%
No Insurance:211.62%
Total:1,299100%
Has Health Insurance:1,27898.38%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty52.8%46.6%48.4%57.3%61.5%61.0%55.7%64.7%68.4%66.8%51.2%55.6%49.0%51.9%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00%
Kindergarten:00%
Elementary school (grades 1-8):00%
High school (grades 9-12):00%
College or graduate school:00%
Total:0100%
Early Childhood:00%
K-12 (Primary & Secondary School):00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 00631 is designated for PO Box delivery only; business establishment and employment data are not available.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:2,155Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:0Source: CBP
1st Quarter Payroll:$0Source: CBP
Annual Payroll:$0Source: CBP
# of Employees:0Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 00631 is located in Lares County, Puerto Rico, within the Lares, PR Metropolitan Statistical Area (CBSA 29720). This Micro area has a population of 0 people, about 0.00% of whom live in ZIP Code 00631. It covers 3.126 sq mi of land and a water area of 0.274 sq mi.

CBSA Name:Lares, PRSource: Census
CBSA Number:29720Source: Census
CBSA Type:MicroSource: Census
CBSA Division:--Source: Census
CBSA Population:0Source: Census
MSA:Source: Census
Land Area:3.126 sq miSource: Census
Water Area:0.274 sq miSource: Census
Congressional District:No DistrictsSource: USPS
Congressional Land Area: sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:--Source: Census
Place Name:--Source: Census

Adjacent & Nearby ZIP Codes


00637 | | 00627

Schools in ZIP Code 00631


ZIP Code 00631 is in the Puerto Rico Department of Education, which serves grades Pre-Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 0 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Jose Emilio Lugo URB Cerros 75 Calle Francisco Pietri
Adjuntas, PR 00631
District: Puerto Rico Department of Education

Colleges & Post Secondary Schools near ZIP Code 00631


University Of Puerto Rico-Utuado Carr. # 10 Km. 52.2
Utuado, PR 00641
Type: Post Secondary
Edp University Of Puerto Rico Inc-San Sebastian Betances # 49
San Sebastian, PR 00685
Type: Post Secondary
Nuc University - Ibc Technical Division - Yauco Yauco Plaza Shopping Center I Local 49
Yauco, PR 00698-0000
Type: Post Secondary
Inter American University Of Puerto Rico-San German Rd. 102 Km. 30.6
San German, PR 00683
Type: Post Secondary
Universidad Adventista De Las Antillas Carr 106 Km 2.2 Int
Mayaguez, PR 00680-0000
Type: Post Secondary
Institucion Chaviano De Mayaguez Calle Ramos Antonini #116 Este
Mayaguez, PR 00680
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov