PlainZIP

Seward, AK · standard

ZIP Code 99664

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

4,932
1/sq mi
$87,760
Median income
$384,600
Median home value
40.8%
Bachelor's or higher

The verdict

Seward pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 29%
household income, US ZIPs
Top 22%
home value, US ZIPs
1
people per sq mi
64%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99664 against every reporting US ZIP.

ZIP code 99664 covers 7045.7 square miles in Seward, Kenai Peninsula County, Alaska (a standard USPS delivery area), with a modest 4,932 residents on file, a density of 1 people per square mile, in the Anchorage time zone.

ZIP 99664 lands in the middle-income range, with a median household income of $87,760 (21% above the Alaska average), while per-capita income is $39,384. 6.9% of residents live below the poverty line, and the unemployment rate reads 4.1%. Median home value sits at $384,600 (83% above the state average), median rent at $1,205 a month, and owner-occupancy at 63.9%.

A solid share of residents have a four-year degree: 40.8% of adults hold a bachelor's degree or higher, the median age is 42, and the average commute is -. Use the benchmarks above to see where 99664 sits relative to Alaska and the national baseline rather than viewing the numbers 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 →

Top industries in ZIP 99664

Top 5 sectors by establishment count in Seward, AK

Which industries have the most business establishments in ZIP 99664.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

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 99664, Seward, 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

4,932

Population

7045.7

Area (sq mi)

1

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 99664?

42.0

Median Age

55.3%

Male

44.7%

Female

6.2%

Foreign-Born

White 84.6%
African American 1.6%
Asian 0.3%
American Indian or Alaska Native 7.6%
Native Hawaiian or Pacific Islander 0.6%
Two or More Ethnicities 4.3%
Hispanic or Latino 2.5%

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?

$87,760

Median Household Income

+21% vs state

$39,384

Per Capita Income

6.9%

Poverty Rate

4.1%

Unemployment Rate

How ZIP 99664 ranks nationally

Seward, AK household income vs. every US ZIP code

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

$87,760 Top 29% higher than 71% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $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 69.9%
Bachelor's Degree or Higher 40.8%

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

What does housing look like?

2,268

Total Housing Units

1,697

Occupied Units

571

Vacant Units

2.26

Avg Household Size

Occupancy Type

Owner 63.9%
Renter 36.1%

$384,600

Median Home Value

+83% vs state

$1,205

Median Rent

1986

Median Year Built

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

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+20.6%

YoY Change (2024)

315

HPI Index (2000 = 100)

+215%

Total Change Since 2000

Home values in ZIP 99664 have increased 20.6% over the past year (2024). Since 2000, this ZIP has seen +215% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.5% 198
2021 +10.5% 219
2022 +24.4% 272
2023 -4.0% 261
2024 +20.6% 315

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 243 business establishments in ZIP 99664, employing approximately 1,420 people with a combined annual payroll of $97,930,000.

243

Businesses

1,420

Employees

$97.9M

Annual Payroll

14

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 72 29.6%
Transportation and warehousing 34 14.0%
Retail trade 26 10.7%
Health care and social assistance 25 10.3%
Construction 14 5.8%
Other services (except public administration) 13 5.3%
Arts, entertainment, and recreation 12 4.9%
Real estate and rental and leasing 10 4.1%
Manufacturing 8 3.3%
Agriculture, forestry, fishing and hunting 6 2.5%
Professional, scientific, and technical services 6 2.5%
Administrative and support and waste management and remediation services 6 2.5%
Finance and insurance 5 2.1%
Wholesale trade 3 1.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

More ZIP Codes in Kenai Peninsula County

99611 standard
Kenai, AK
Pop: 15,122
99669 standard
Soldotna, AK
Pop: 14,191
99603 standard
Homer, AK
Pop: 9,840
99672 standard
Sterling, AK
Pop: 3,704
99556 standard
Anchor Point, AK
Pop: 2,510
99610 standard
Kasilof, AK
Pop: 2,167

Related Areas

Kenai Peninsula County Seward, AK Alaska

Frequently Asked Questions

What county is ZIP code 99664 in? ▼
ZIP code 99664 (Seward) is located in Kenai Peninsula County, Alaska. Kenai Peninsula County contains multiple ZIP codes, see the full list at /counties/kenai-peninsula-ak.
What is the population of ZIP code 99664? ▼
ZIP code 99664 in Seward, AK has a population of 4,932 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99664? ▼
The median household income in ZIP 99664 is $87,760, which is 15% above the national average of $76,288.
What is the average home value in ZIP 99664? ▼
The median home value in ZIP 99664 is $384,600, which is 38% above the national average of $278,155.
What is the demographic makeup of ZIP 99664? ▼
The largest racial group in ZIP 99664 is White at 84.6%. Hispanic or Latino residents make up 2.5% of the population.
How many businesses are in ZIP code 99664? ▼
ZIP code 99664 has 243 business establishments employing approximately 1,420 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 99664? ▼
The top industries by establishment count in ZIP 99664 are: Accommodation and food services (72), Transportation and warehousing (34), Retail trade (26). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 99664? ▼
According to the FHFA House Price Index, home values in ZIP 99664 increased by 20.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 215%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 99664? ▼
In ZIP code 99664, 69.9% of residents aged 25+ have a high school diploma or higher, and 40.8% 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 99664? ▼
In ZIP code 99664, approximately 63.9% of occupied housing units are owner-occupied and 36.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99664? ▼
The poverty rate in ZIP code 99664 is 6.9% 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.