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99136
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  3. ZIP Code 99136
Washington (WA)Whitman CountyPullman509

ZIP Code 99136 — Hay, WA

Whitman County * Pullman metro

Compare

14

Population

$87.7K

Median income

per household

0.0%

Poverty rate

What stands out

  • Median household income: $87.7K.
  • Poverty rate: 0.0% (low poverty; bottom 10% vs US ZIP codes).

Categories vs U.S.

Economy

3 of 3 metrics better than U.S. benchmarks

Median household income

$87.7K

U.S.

$81K

Per-capita income

$53.5K

U.S.

$45K

Housing stress

Income distribution

Share of households by income bracket (ACS).

< $50k
45.5%
$50–100k
54.5%
$100–200k
0.0%
$200k+
0.0%

Connectivity

0 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

69.6%

U.S.

85.3%

Gigabit ready

3.3%

U.S.

8.6%

5G available

57.0%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

0.0%

U.S.

35.7%

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

LaCrosse School District

Map

ZIP 99136

Hay, WA

Population

14

Area

17.4 sq mi

Density

0.8/sq mi

Neighbors

99143
More Details

Census Tracts

1 tracts overlap this ZIP. Hover over segments to explore.

100%

Tract 10

100%

Total tracts: 1Coverage: 100.0%

Representation

U.S. House

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area. Verify by address.

100%

WA-5

100%

Districts: 1Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
Broadband
2020-12
Mobile
2025-11-24
Page Updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)FCC (Form 477 broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.