99136 ZIP Code — Hay, WA
Whitman County, Washington
ZIP code 99136 is located in Hay, Washington, within Whitman County. It covers approximately 17.39 square miles and serves a population of 17 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.
17
population
17.39
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
99136 ZIP code map
Cities in ZIP code 99136
Below are the cities the US Postal Service accepts for ZIP code 99136. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Hay | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 17 |
| Population density | 1 / sq mi |
| State FIPS | 53 |
| County FIPS | 075 |
| Geography | |
|---|---|
| Land area | 17.39 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 46.6857 |
| Longitude | -117.9471 |
| Timezone | Pacific (PT) |
| Area code | 509 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 91.7% | 55.9% | 31.7% |
| $50k – $100k | 0.0% | 24.5% | 30.6% |
| $100k – $200k | 8.3% | 15.6% | 27.1% |
| Over $200k | 0.0% | 4.0% | 10.6% |
Demographics & statistics
17
Population
1
People per sq mi
82.1
Median age
$0
Median household income
$44,929
Per capita income
$114,600
Median home value
$0
Median monthly rent
100.0%
Home ownership
23.5%
Poverty rate
0.0%
Unemployment
21
Housing units
0.0%
Bachelor's or higher
Age distribution
Male
Female
6
60–64
2
5
75–84
1
2
85+
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 0 | 0.0% |
| 18 and over | 17 | 100.0% |
| 65 and over | 9 | 52.9% |
| Median age | 82.1 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 17 | 100% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 91.7% | 55.9% | 31.7% |
| $50k – $100k | 0.0% | 24.5% | 30.6% |
| $100k – $200k | 8.3% | 15.6% | 27.1% |
| Over $200k | 0.0% | 4.0% | 10.6% |
$25k–$35k
23.1%
$35k–$50k
30.8%
$75k–$100k
46.2%
| Range | % of households |
|---|---|
| $25k–$35k | 23.1% |
| $35k–$50k | 30.8% |
| $75k–$100k | 46.2% |
| Median income | $0 |
Housing
Home values
Under $50k
23.1%
$100k–$150k
46.2%
$150k–$200k
30.8%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $114,600 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 38.1% |
| Single-family detached | 85.7% |
| Large apartment buildings | 0.0% |
| Mobile homes | 14.3% |
| Median rooms | 5.7 |
| Avg household size (owned) | 1.31 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 0.0% |
| 1990–1999 | 0.0% |
| 1980–1989 | 14.3% |
| 1970–1979 | 0.0% |
| 1960–1969 | 0.0% |
| 1950–1959 | 0.0% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 85.7% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 14.3% |
| 3 bedrooms | 66.7% |
| 4 bedrooms | 19.0% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 0.0% |
| 2 vehicles | 100.0% |
| 3 or more | 0.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 23.1% |
| Fuel oil | 46.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 0 | 0.0% |
| Cohabiting couple | 4 | 30.8% |
| Male householder, no spouse | 9 | 69.2% |
| Female householder, no spouse | 0 | 0.0% |
| Households with children under 18 | 0 | 0.0% |
| Households with seniors (65+) | 9 | 69.2% |
| Average household size | 1.31 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 30.8% | 0.0% |
| Married | 0.0% | 0.0% |
| Separated | 0.0% | 0.0% |
| Widowed | 69.2% | 100.0% |
| Divorced | 0.0% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
0.0%
HS graduate
47.1%
Some college, no degree
52.9%
Associate's degree
0.0%
Bachelor's degree
0.0%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 100.0% |
| Bachelor's or higher | 0.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 0 | 0.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Manufacturing
100.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 0.0% |
| Service | 0.0% |
| Sales & office | 0.0% |
| Natural resources & construction | 0.0% |
| Production & transportation | 100.0% |
Employment type
| Type | % |
|---|---|
| Private sector | 100.0% |
| Government | 0.0% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 100.0% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
23.5%
Under 18 years
0.0%
18 and over
23.5%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 69.2% |
| Retirement income | 100.0% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 0.0% |
| High blood pressure | 0.0% |
| High cholesterol | 0.0% |
| Diabetes | 0.0% |
| Heart disease | 0.0% |
| Stroke | 0.0% |
| Asthma | 0.0% |
| Arthritis | 0.0% |
| Kidney disease | 0.0% |
| Pulmonary disease | 0.0% |
| Cancer | 0.0% |
| Behavior / access | % |
|---|---|
| Smoking | 0.0% |
| Binge drinking | 0.0% |
| No physical activity | 0.0% |
| Less than 7 hrs sleep | 0.0% |
| Depression | 0.0% |
| Fair or poor health | 0.0% |
| Poor mental health | 0.0% |
| Poor physical health | 0.0% |
| No health insurance | 0.0% |
| Visited doctor (checkup) | 0.0% |
| Visited dentist | 0.0% |
| Cholesterol screening | 0.0% |
| Teeth loss | 0.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 6 | 35.3% |
| Disability | % |
|---|---|
| Any disability | 35.3% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 66.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 58.8% |
| Public insurance | 76.5% |
| No insurance | 0.0% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 17 | 100.0% |
| Spanish | 0 | 0.0% |
| 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) | 17 | 100.0% |
| Born in same state | 17 | 100.0% |
| Born in different state | 17 | 100.0% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 6 | 35.3% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 76.5% |
| Internet access | 30.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 99136
What city is ZIP code 99136 in?
ZIP code 99136 is primarily assigned to Hay, Washington.
What county is ZIP code 99136 in?
ZIP code 99136 falls within Whitman County, Washington.
Does ZIP code 99136 have an older population?
53% of residents in ZIP code 99136 are 65 or older, above the national average of ~17%.
Does ZIP code 99136 have a large retiree population?
69% of households in ZIP code 99136 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 99136 have a large veteran population?
35% of civilians in ZIP code 99136 are veterans, above the national average of ~7%.
What is the poverty rate in ZIP code 99136?
24% of residents in ZIP code 99136 live below the poverty line, above the national average.
What timezone is ZIP code 99136 in?
ZIP code 99136 observes the PST timezone.