Old Harbor, AK · standard
ZIP Code 99643
Kodiak Island, Alaska - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 218
- 4/sq mi Low-density area
- $30,000
- Median income Below-median income area
- 10.1%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Old Harbor pairs one of the lowest household incomes in the country, in a rural, homeowner-dominated area.
- 2nd pct
- household income, US ZIPs
- 4
- people per sq mi
- 67%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99643 against every reporting US ZIP.
ZIP code 99643 is a sparsely populated ZIP (a standard USPS delivery area) in Old Harbor, Kodiak Island, Alaska, home to just 218 residents across 51.9 square miles, a density of 4 people per square mile, in the Anchorage time zone.
ZIP 99643 sits on the lower end of the income spectrum: median household income is $30,000 (59% below the average Alaska ZIP), while per-capita income is $21,038. Economic pressure is pronounced: 56.2% of residents are below the poverty line and unemployment is 26.8%. The ACS does not report a median home value for this ZIP, so housing cost context is limited to the available tenure and rent fields.
Formal educational attainment runs low here: just 10.1% of adults hold a bachelor's degree or higher, the median age is 34.2, and the average commute is -. No nearby ZIP peer set is available for this delivery area, so the Alaska and national benchmarks above are the appropriate context for 99643.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 99643, Old Harbor, AK · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
218
Population
51.9
Area (sq mi)
4
People / sq mi
Anchorage
Time Zone
standard
ZIP Type
Who lives in ZIP 99643?
34.2
Median Age
54.3%
Male
45.7%
Female
1.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$30,000
Median Household Income
-59% vs state ZIP avg
$21,038
Per Capita Income
56.2%
Poverty Rate
26.8%
Unemployment Rate
How ZIP 99643 ranks among Alaska ZIPs
Old Harbor, AK household income vs. every Alaska ZIP code
Median household income among 197 reporting Alaska ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$30,000 3rd percentile higher than 3% of 197 Alaska ZIPs
Each bar is a $20K-wide band; taller bars hold more Alaska ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
153housing units
153
Total Housing Units
86
Occupied Units
67
Vacant Units
1.88
Avg Household Size
Occupancy Type
1975
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 6 business establishments in ZIP 99643, employing approximately 12 people with a combined annual payroll of $937,000.
6
Businesses
12
Employees
$937K
Annual Payroll
0
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 99643, both outside AK so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Kodiak Island
Related Areas
Frequently Asked Questions
What county is ZIP code 99643 in?
ZIP code 99643 (Old Harbor) is located in Kodiak Island, Alaska. Kodiak Island contains multiple ZIP codes, see the full list at /counties/kodiak-island-ak.
What is the population of ZIP code 99643?
ZIP code 99643 in Old Harbor, AK has a population of 218 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99643?
The median household income in ZIP 99643 is $30,000, which is 61% below the national average of $76,288.
What is the demographic makeup of ZIP 99643?
The largest racial group in ZIP 99643 is American Indian or Alaska Native at 72.8%.
How many businesses are in ZIP code 99643?
ZIP code 99643 has 6 business establishments employing approximately 12 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 99643?
In ZIP code 99643, 67.7% of residents aged 25+ have a high school diploma or higher, and 10.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 99643?
In ZIP code 99643, approximately 67.4% of occupied housing units are owner-occupied and 32.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99643?
The poverty rate in ZIP code 99643 is 56.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
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What to do with ZIP 99643's numbers, next.
- See how ZIP 99643 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Old Harbor, AK ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.