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Knik River CDP, AK

ZIP 99645 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 99645

99645 has a population of 31,494 with a median age of 36.5 yrs (51.1% male).

Race & Ethnicity
White
77.7%+26% vs US avg
x
Black
1.4%-88% vs US avg
x
Asian
1.2%-79% vs US avg
x
Hispanic
6.4%-66% vs US avg
x
Other / Two+
13.2%
x
Age Groups
0–17
26.0%+18% vs US avg
x
18–64
60.3%-2% vs US avg
x
65+
13.7%-16% vs US avg
x
Education
Less than HS
4.7%-58% vs US avg
x
High school
27.1%+3% vs US avg
x
Some college
37.1%+29% vs US avg
x
Bachelor's+
31.1%-8% vs US avg
x
Marital Status
Married
56.9%+18% vs US avg
x
Never married
28.1%-17% vs US avg
x
Divorced
10.3%+0% vs US avg
x
Widowed / Separated
4.8%
x
Diversity Index
37/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
8.7%-24% vs US avg
x
Foreign Born
25.2%+81% vs US avg
x
Veterans
12.3%+105% vs US avg
x
Disability
14.6%+9% vs US avg
x
Single Parent
8.0%-1% vs US avg
x
Recent Births
65.3%+1027% vs US avg
x
Top ancestry
GermanEnglishIrish

Health & Community Indicators in 99645

Poverty Rate
8.7%-24% vs US avg
x
Veterans
12.3%+105% vs US avg
x
Foreign Born
25.2%+81% vs US avg
x
Single Parent
8.0%-1% vs US avg
x
Disability
14.6%+9% vs US avg
x
Uninsured
11.0%+38% vs US avg
x
SNAP Benefits
8.8%-25% vs US avg
x
Private School
0.5%-96% vs US avg
x
Recent Births
65.3%+1027% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population31,494
Median age36.5
Poverty rate8.7%
Demographics statistics
Demographics
White77.7%
Hispanic6.4%
Black1.4%
Asian1.2%
Foreign-born25.2%