PlainZIP

Old Harbor, AK · standard

ZIP Code 99643

Kodiak Island County, Alaska - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

218
4/sq mi
$30,000
Median income
10.1%
Bachelor's or higher

The verdict

Old Harbor pairs one of the lowest household incomes in the country, in a rural, homeowner-dominated area.

2th 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 County, 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 Alaska average), while per-capita income is $21,038. Local economic indicators show a 56.2% poverty rate alongside 26.8% unemployment. Median home value sits at -, median rent at - a month, and owner-occupancy at 67.4%.

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 -. The state and national benchmarks above give 99643's numbers context; they should not be read in isolation.

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 99643?

34.2

Median Age

54.3%

Male

45.7%

Female

1.2%

Foreign-Born

White 8.0%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 72.8%
Native Hawaiian or Pacific Islander 1.2%
Two or More Ethnicities 17.9%
Hispanic or Latino 0.0%

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

$21,038

Per Capita Income

56.2%

Poverty Rate

26.8%

Unemployment Rate

How ZIP 99643 ranks nationally

Old Harbor, AK household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$30,000 2nd percentile higher than 2% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). This entry sits in this band. $40,000–$60,000: 7,092 US ZIPs (23%). Above this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 67.7%
Bachelor's Degree or Higher 10.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

153

Total Housing Units

86

Occupied Units

67

Vacant Units

1.88

Avg Household Size

Occupancy Type

Owner 67.4%
Renter 32.6%

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.

More ZIP Codes in Kodiak Island County

99615 standard
Kodiak, AK
Pop: 12,899
99550 standard
Port Lions, AK
Pop: 197
99644 standard
Ouzinkie, AK
Pop: 175
99624 standard
Larsen Bay, AK
Pop: 90

Related Areas

Kodiak Island County Old Harbor, AK Alaska

Frequently Asked Questions

What county is ZIP code 99643 in? ▼
ZIP code 99643 (Old Harbor) is located in Kodiak Island County, Alaska. Kodiak Island County 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.

Read our methodology to see how this data is sourced, computed, and verified.