99788 ZIP Code — Chalkyitsik, AK
Yukon Koyukuk County, Alaska
ZIP code 99788 is located in Chalkyitsik, Alaska, within Yukon Koyukuk County. It covers approximately 8.50 square miles and serves a population of 95 residents. This is a standard ZIP code in the Alaska (AKT) timezone, served by area code 907.
95
population
8.50
sq mi land
Standard
ZIP type
Alaska (AKT)
timezone
99788 ZIP code map
Cities in ZIP code 99788
Below are the cities the US Postal Service accepts for ZIP code 99788. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Chalkyitsik | Acceptable |
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 95 |
| Population density | 11 / sq mi |
| State FIPS | 02 |
| County FIPS | 290 |
| Geography | |
|---|---|
| Land area | 8.50 sq mi |
| Water area | 0.50 sq mi |
| Latitude | 66.6418 |
| Longitude | -143.7507 |
| Timezone | Alaska (AKT) |
| Area code | 907 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 90.0% | 57.9% | 29.8% |
| $50k – $100k | 5.0% | 28.7% | 32.4% |
| $100k – $200k | 5.0% | 11.4% | 28.9% |
| Over $200k | 0.0% | 2.0% | 8.8% |
Demographics & statistics
95
Population
11
People per sq mi
32.8
Median age
$31,250
Median household income
$36,002
Per capita income
$30,400
Median home value
$0
Median monthly rent
80.6%
Home ownership
49.5%
Poverty rate
5.5%
Unemployment
54
Housing units
32.4%
Bachelor's or higher
Age distribution
Male
Female
5
Under 5
2
7
5–9
3
7
10–14
3
16
25–34
7
14
35–44
6
4
45–54
2
6
55–59
2
2
65–74
1
6
75–84
2
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 27 | 28.4% |
| 18 and over | 68 | 71.6% |
| 65 and over | 11 | 11.6% |
| Median age | 32.8 years | |
Race & ethnicity
American Indian / Alaska Native
77.9%
White
22.1%
| Group | Count | % |
|---|---|---|
| American Indian / Alaska Native | 74 | 77.9% |
| White | 21 | 22.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 90.0% | 57.9% | 29.8% |
| $50k – $100k | 5.0% | 28.7% | 32.4% |
| $100k – $200k | 5.0% | 11.4% | 28.9% |
| Over $200k | 0.0% | 2.0% | 8.8% |
Under $10k
9.7%
$15k–$25k
19.4%
$25k–$35k
32.3%
$50k–$75k
38.7%
| Range | % of households |
|---|---|
| Under $10k | 9.7% |
| $15k–$25k | 19.4% |
| $25k–$35k | 32.3% |
| $50k–$75k | 38.7% |
| Median income | $31,250 |
Housing
Home values
Under $50k
76.0%
$50k–$100k
12.0%
$100k–$150k
12.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $30,400 |
| Median rent / month | $0 |
| Owner occupied | 80.6% |
| Renter occupied | 19.4% |
| Vacant | 48.3% |
| Single-family detached | 100.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 2.4 |
| Avg household size (owned) | 2.36 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 25.0% |
| 1990–1999 | 20.0% |
| 1980–1989 | 41.7% |
| 1970–1979 | 6.7% |
| 1960–1969 | 1.7% |
| 1950–1959 | 0.0% |
| 1940–1949 | 5.0% |
| 1939 or earlier | 0.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 30.0% |
| 1 bedroom | 28.3% |
| 2 bedrooms | 8.3% |
| 3 bedrooms | 30.0% |
| 4 bedrooms | 3.3% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 100.0% |
| 1 vehicle | 0.0% |
| 2 vehicles | 0.0% |
| 3 or more | 0.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Fuel oil | 32.3% |
| Wood | 67.7% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 10 | 32.3% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 18 | 58.1% |
| Female householder, no spouse | 3 | 9.7% |
| Households with children under 18 | 13 | 41.9% |
| Households with seniors (65+) | 3 | 9.7% |
| Average household size | 2.19 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 63.3% | 0.0% |
| Married | 36.7% | 52.6% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 47.4% |
| Divorced | 0.0% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
4.4%
HS graduate
33.8%
Some college, no degree
29.4%
Associate's degree
0.0%
Bachelor's degree
0.0%
Graduate / professional
32.4%
| Metric | % |
|---|---|
| HS diploma or higher | 95.6% |
| Bachelor's or higher | 32.4% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 20 | 100.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Education & healthcare
32.7%
Public administration
28.8%
Professional & management
15.4%
Transportation & utilities
13.5%
Manufacturing
9.6%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 71.2% |
| Service | 0.0% |
| Sales & office | 13.5% |
| Natural resources & construction | 5.8% |
| Production & transportation | 9.6% |
Employment type
| Type | % |
|---|---|
| Private sector | 38.5% |
| Government | 61.5% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 0.0% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 79.6% |
| Work from home | 0.0% |
| Other means | 20.4% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
49.5%
Under 18 years
88.9%
18 and over
33.8%
Married-couple families
100.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 9.7% |
| Retirement income | 9.7% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 51.6% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 37.4% |
| High blood pressure | 36.5% |
| High cholesterol | 28.0% |
| Diabetes | 14.7% |
| Heart disease | 8.7% |
| Stroke | 5.6% |
| Asthma | 12.5% |
| Arthritis | 24.3% |
| Kidney disease | 4.2% |
| Pulmonary disease | 9.9% |
| Cancer | 5.6% |
| Behavior / access | % |
|---|---|
| Smoking | 34.4% |
| Binge drinking | 19.8% |
| No physical activity | 31.7% |
| Less than 7 hrs sleep | 36.5% |
| Depression | 20.5% |
| Fair or poor health | 25.2% |
| Poor mental health | 17.9% |
| Poor physical health | 16.3% |
| No health insurance | 18.2% |
| Visited doctor (checkup) | 63.7% |
| Visited dentist | 44.5% |
| Cholesterol screening | 82.1% |
| Teeth loss | 33.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 15 | 22.1% |
| Disability | % |
|---|---|
| Any disability | 0.0% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 0.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 35.8% |
| Public insurance | 69.5% |
| No insurance | 3.2% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 88 | 92.6% |
| Spanish | 3 | 3.4% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 95 | 100.0% |
| Born in same state | 95 | 100.0% |
| Born in different state | 71 | 74.7% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Polish | 8 | 8.4% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 32.6% |
| Internet access | 71.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 99788
What city is ZIP code 99788 in?
ZIP code 99788 is primarily assigned to Chalkyitsik, Alaska.
What county is ZIP code 99788 in?
ZIP code 99788 falls within Yukon Koyukuk County, Alaska.
What is the poverty rate in ZIP code 99788?
50% of residents in ZIP code 99788 live below the poverty line, above the national average.
Does ZIP code 99788 have a large veteran population?
22% of civilians in ZIP code 99788 are veterans, above the national average of ~7%.
Is ZIP code 99788 mostly owner-occupied?
81% of occupied units in ZIP code 99788 are owner-occupied, well above the national average.
What is the typical home value in ZIP code 99788?
The median home value in ZIP code 99788 is $30,400.
What timezone is ZIP code 99788 in?
ZIP code 99788 observes the AKST timezone.