98837 ZIP Code, Moses Lake, WA

98837 is a ZIP code in Moses Lake, Washington in Grant County. It covers 486 square miles of land. The closest ZIP codes are 98857, 98832 and 98851. 49,455 people live here in 18,264 households, more than in 9 of every 10 Washington ZIP codes. With about 102 people per square mile it is lightly settled, and owners and renters are mixed (67% own). Median household income is $74,586, below the Washington median of $98,141.

Quick facts

Key figures

MeasureValue
Residents49,455
Households18,264
Median household income$74,586
Income per person$35,597
Median age34.4
Homeowners66.6%
Median home value$315,000
Median rent$1,158
Bachelor's degree or higher20.5%
Average commute (minutes)19.5
Households with kids under 1832.6%
Moved in the past year16.2%
Below the poverty line14.6%
Broadband internet90.8%
Speak a non-English language at home22.7%

Household income

% of householdsValue
<$10K6.0%
$10–15K3.5%
$15–25K5.2%
$25–35K7.4%
$35–50K10.5%
$50–75K17.6%
$75–100K18.3%
$100–150K15.3%
$150–200K7.1%
$200K+9.0%

Age

% of all residentsValue
<1014.8%
10–1914.6%
20–247.0%
25–3414.6%
35–4411.4%
45–5411.1%
55–6411.8%
65–749.2%
75+5.5%

Tenure

% of housing unitsValue
Owned, with mortgage38.5%
Owned outright25.0%
Rented31.4%
Vacant5.1%

Type of building

% of housing unitsValue
Detached house58.8%
Townhome4.0%
2–4 units6.5%
5–19 units5.2%
20+ units7.0%
Mobile / other18.6%

Businesses in 98837

1,149 business establishments with 14,328 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

98837 has 29 USPS carrier routes with 19,148 residential and 1,055 business mailboxes. Open the EDDM route map.

Carrier routes in 98837

98837 has 29 USPS carrier routes (14 city (C), 11 rural (R), 4 highway contract (H)) with 19,148 residential and 1,055 business mailboxes. Routes range from 343 homes (R002) to 1,183 homes (C001); the median route has 641 homes. The Census counted 18,264 households in 98837 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–49912
500–7498
750–9993
1,000–1,4996
1,500+0

Best routes in 98837 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C018 — USPS business mailboxes 189, 785 homes
  2. Route C011 — USPS business mailboxes 129, 641 homes
  3. Route C004 — USPS business mailboxes 126, 406 homes
  4. Route C009 — USPS business mailboxes 109, 579 homes
  5. Route C014 — USPS business mailboxes 91, 1,008 homes

Select these 5 routes on the route map

Every carrier route in 98837

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City1,18319$117,789———
C002City1,0047$65,214———
C003City1,02855$87,302———
C004City406126$53,905———
C007City7252$105,295———
C008City8668$65,112———
C009City579109$105,295———
C010City5794$65,112———
C011City641129$60,323———
C014City1,00891$89,566———
C015City1,01724$65,214———
C016City1,0775$57,434———
C017City80816$65,112———
C018City785189$31,512———
H061Highway contract38012$66,195———
H076Highway contract7422$81,010———
H089Highway contract6741$87,302———
H099Highway contract3725$72,097———
R001Rural4743$72,097———
R002Rural34318$117,789———
R003Rural34732$72,097———
R004Rural4294$57,484———
R005Rural6702$58,515———
R006Rural4760$117,789———
R007Rural46788$124,329———
R008Rural42649$117,789———
R009Rural48026$53,905———
R010Rural6648$124,329———
R011Rural49821$58,515———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 98837 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 98837

Where it ranks

Mail every home in 98837

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 98837, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 98837 in?
98837 is a Moses Lake, WA mailing address. By land area, 4% lies inside Moses Lake and 1% lies inside Moses Lake North; the rest is outside any Census-defined city or community.
What county is 98837 in?
98837 is in Grant County.
What is the population of 98837?
About 49,455 people (±1,340), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 46,262.
What is the median household income in 98837?
$74,586 (±$4,934), compared with $98,141 for Washington as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 98837?
29 USPS carrier routes with 19,148 residential and 1,055 business mailboxes (20,198 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 98837?
The closest, measured center to center: 98857 (17.5 mi, Warden), 98832 (18.6 mi, Krupp (Marlin)), 98851 (19.2 mi, Soap Lake), 98823 (20 mi, Ephrata), 98853 (22.1 mi) and 99344 (23.4 mi, Othello).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.