ZIP Code 86028 in Petrified Forest Natl Pk, AZ

Data Last Updated: February 1, 2026
City:Petrified Forest Natl Pk, Arizona
City Alias:Holbrook, Petrified For
County:Apache County
Timezone:Mountain (GMT -07:00)
Local Time:10:21:17 AM
Population:34 [See All]
Area Code:928
Classification:PO Box
Coordinates:35.0658, -109.7831
Land Area:14.173 sq mi
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86028 - Petrified Forest Natl Pk, AZ

ZIP Code 86028, Petrified Forest Natl Pk

Retirement
LocationApache County, AZ
Area111.1 sq mi
Population34
Households5
PO Boxes10 Regional Hub (200%)
Median Age62.5 years (Senior)
Seasonal Housing20%
ZIP CreatedBefore Oct 2004
Key Facts
  • This ZIP code was classified as PO Box only and serves Petrified Forest National Park, not a residential community
  • With 10 PO Boxes and 5 households, the post office serves park staff plus seasonal workers and contractors
  • Highway Contract Route delivery handles park operations across 111 square miles of protected desert
  • All 5 occupied housing units are rentals, typical of National Park Service employee housing
  • Median age of 62.5 years suggests experienced park rangers and long-term staff

A National Park Service ZIP

ZIP code 86028 serves Petrified Forest National Park in northeastern Arizona, covering 111 square miles of protected desert landscape in Apache County. This isn't a residential community. It's a National Park Service facility ZIP where rangers and park staff receive mail.

Population and Housing

Just 34 people live within the ZCTA boundary, with a median age of 62.5 years. These are primarily park personnel and their families. The post office maintains 10 PO Boxes for 5 households, resulting in an adoption rate of 2.0x. This higher-than-expected box count serves seasonal workers, contractors, and administrative needs beyond the handful of permanent residents.

Of the 25 total housing units, only 5 are occupied year-round. The remaining 20 units are vacant, with 5 classified as seasonal or recreational use. This pattern fits park employee housing, where units remain available for temporary assignments or remain unused during staffing gaps. All 5 occupied units are renter-occupied, consistent with National Park Service housing.

Mail Delivery

Mail delivery follows Highway Contract Route delivery patterns, appropriate for the remote desert location along Interstate 40. The single street address on record is Park Road, which serves the park's administrative facilities. All residential mail goes to PO Boxes, while the highway route handles park operations.

Mailing Information

This isn't a PO Box Only Zone. Street delivery exists in nearby Holbrook, Arizona, which appears as an accepted mailing alias. Holbrook, about 25 miles west, provides the nearest full-service post office for the region. The 86028 ZIP exists specifically to serve the National Park's mail needs within its boundaries.

Accepted mailing names:

  • PETRIFIED FOREST NATL PK, AZ 86028
  • PETRIFIED FOR, AZ 86028
  • HOLBROOK, AZ 86028

Street Name Patterns

Park Administrative

Single street address serves park administrative facilities.

Interactive charts load automatically as you scroll. Hover for data, click to explore trends, and use the menu to export.

Population & Demographics


ZIP Code 86028 has 34 residents and 5 households (average 5.40 persons per household). The median age is 62.5 years, significantly older than the state (38.9) and significantly older than the nation (38.8). The gender split is 35.3% male and 64.7% female, which is much lower than the state male share (49.5%), making this a female-majority area. Largest groups are White (70.6%, much higher than the state average of 60.4% and well above the national average of 61.6%) and Black or African American (11.8%, much higher than the state average of 4.7%); Hispanic or Latino residents make up 5.9%, which is much lower than the state average (30.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & 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:34Source: Census DHC
2024 ACS Population Estimate:47Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:2.4 people per sq mile
Average Income:$0Source: Census ACS
Households:5Source: Census DHC
Average House Value:$666,666,666Source: Census ACS
Persons Per Household:5.40Source: Census DHC
Average Family Size:0.00Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--0000000006739374347
Decennial Census47------------------34--------
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: 62.5

Male Median Age: 67.5

Female Median Age: 62

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male000001101002104200
Female111111200011341022
Total111112301013445222
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:2472.73%
Black:412.12%
Hispanic:*26.06%
Asian:00%
American Indian:00%
Hawaiian:00%
Other:39.09%
Total:33100%
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:1235.29%67.5 years
Females:2264.71%62.0 years
Total:34100%62.5 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:47100.00%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:00.00%
Foreign born, not a U.S. citizen:00.00%
Total Population:47100%
Total Native Population:47100.00%
Total Foreign-born Population:00.00%
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 $0, which is well under the national median ($80,734), and above its 2019 pre-pandemic level by $0. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $0 and female is $37,552, which is far less than the national female median ($55,274), with a current gap of $37,552 that has narrowed from 2011 to 2024. The labor-force participation rate is 100.0%, which is much higher than the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Sales (63.8%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy 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$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Family Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median NonFamily Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Male Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Female Income$0$0$0$0$0$0$0$0$0$0$0$0$35,260$37,552
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:47100.00%
Unemployed:00.00%
Not In Labor Force:00.00%
Total:47100%
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:1736.17%
Service:00.00%
Sales and Office:3063.83%
Natural resources, construction, and maintenance:00.00%
Production, transportation, and material moving:00.00%
Total Civilian Employed Population:47100%
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 $0, which is much lower than the national median ($332,700), and above its 2019 pre-pandemic level by $0. The median gross rent is $0, which is well under the national median ($1,413), and above its 2019 pre-pandemic level by $0. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing 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$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00%
$500 to $999:00%
$1,000 to $1,499:00%
$1,500 to $1,999:00%
$2,000 to $2,499:00%
$2,500 to $2,999:00%
$3,000 or more:00%
No Rent:00%
Total:0100%
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$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):17100.00%
Owner Occupied (free and clear, no mortgage):00.00%
Renter Occupied:00.00%
Total Occupied Housing Units:17100%

Occupied Housing Units:1736.96%
Vacant Housing Units (not graphed):2963.04%
Total Housing Units:46100%
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:46100.00%
Multi-Family Units:00.00%
Other Units:00.00%
Total Housing Units:46100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2024, 0.00% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.70%). High school or higher is 100.00%, which is comparable to the national rate (89.60%). The uninsured rate is 0.00%, which is comparable to the national rate (8.40%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.80%). Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Insufficient data for school enrollment.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool 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:00.00%
9th to 12th grade, no diploma:00.00%
High school graduate (includes equivalency):2451.06%
Some college, no degree:1736.17%
Associate's degree:612.77%
Bachelor's degree:00.00%
Graduate or professional degree:00.00%
Total:47100%
High school or higher:47100.00%
Bachelor's degree or higher:00.00%
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:4187.23%
Public Insurance:612.77%
No Insurance:00.00%
Total:47100%
Has Health Insurance:47100.00%
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 Poverty0.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%0.0%0.0%0.0%0.0%0.0%0.0%
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 86028 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:494Source: 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 86028 is located in Apache County, Arizona, within the Metropolitan Statistical Area (CBSA ) and Arizona's 2nd Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 86028. It covers 14.173 sq mi of land and a water area of 0.015 sq mi.

CBSA Name:--Source: Census
CBSA Number:--Source: Census
CBSA Type:--Source: Census
CBSA Division:--Source: Census
CBSA Population:0Source: Census
MSA:Source: Census
Land Area:14.173 sq miSource: Census
Water Area:0.015 sq miSource: Census
Congressional District:02Source: USPS
Congressional Land Area:7838.12 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


86029 | | 86025

Schools in ZIP Code 86028


We could not locate which school district 86028 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Navit - Northland Pioneer College Pdc 2251 Navajo Blvd
Holbrook, AZ 86025
District: UnknownNearby
Navajo County Instruction For Success (Ncis) 294 W Carlos Ave
Holbrook, AZ 86025
District: UnknownNearby
Asdb - Distance Itinerant Service Program Region 1 1607 Navajo Blvd
Holbrook, AZ 86025
District: UnknownNearby
Park Elementary School 453 N 7th St
Holbrook, AZ 86025
District: Holbrook Unified DistrictNearby
Eastern Sky Community Charter School 455 N 1st Ave
Holbrook, AZ 86025
District: UnknownNearby
Native American Christian Academy 8450 Sun Valley Rd
Sun Valley, AZ 86029
District: Private SchoolNearby
Holbrook Seventh-Day Adventist Indian School 2001 Mclaws Rd
Holbrook, AZ 86025
District: Private SchoolNearby
Winslow Christian School 502 Airport Rd
Winslow, AZ 86047
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 86028


Northland Pioneer College 2251 E. Navajo Blvd.
Holbrook, AZ 86025-0610
Type: Post Secondary
Arizona State University - Northeastern Arizona 1001 West Deuce Of Clubs
Show Low, AZ 85901-6211
Type: Post Secondary
University Of New Mexico-Gallup Campus 705 Gurley Ave.
Gallup, NM 87301
Type: Post Secondary
Dine College Route 12, One Circle Drive
Tsaile, AZ 86556
Type: Post Secondary
Navajo Technical University Lower Point Road, State Road 371
Crownpoint, NM 87313-0849
Type: Post Secondary
Indian Bible College 2237 East Cedar Avenue
Flagstaff, AZ 86004-1919
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