ZIP Code 98111 in Seattle, WA

Data Last Updated: January 1, 2026
City:Seattle, Washington
County:King County
Timezone:Pacific (GMT -08:00)
Local Time:12:00:23 AM
Population:No Population Data
Area Codes:206 / 425
Classification:PO Box
Coordinates:47.6064, -122.3308
Quick Link:
https://www.zip-codes.com/zip-code/98111/zip-code-98111.asp

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98111 - Seattle, WA

ZIP Code 98111, Seattle

Small Town Unique ZIP No Census Data
LocationKing County, WA
Area0 sq mi Single Point
Delivery Points831 (489 businesses)
PO Boxes342
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 98101
Key Facts
  • This ZIP code contains only PO Boxes (342 total), while street delivery for the same area is handled by ZIP 98101
  • The area shows 489 businesses but zero recorded residential population, making this primarily a commercial mailing address
  • All delivery points are concentrated on a single street (Union Street) with 275 records showing multi-unit addressing
  • Located in Seattle's Central Business District and Downtown neighborhoods in King County
  • The post office has maintained this PO Box-only ZIP code since before October 2004

Business-Focused Urban ZIP

This is a business-focused ZIP code. The area recorded 489 businesses and 376 employees in commercial establishments, but zero residential population in the base ZIP boundaries. Most boxes serve downtown offices, commercial entities, and individuals who want a prestigious Seattle address separate from their home delivery. The single street route on Union Street handles 275 delivery records with multi-unit buildings, typical of dense urban commercial districts.

Street Name Patterns

Urban Commercial

The single street reflects downtown Seattle's dense urban layout, where Union Street represents the geographic center of PO Box service rather than a residential neighborhood.

Nearby Areas

Downtown Central Business District Pike Place Market Belltown First Hill

Business & Employment Statistics


ZIP Code 98111 supports both business and residential activity. According to the Business Census (2024), there are 12 business establishments, employing about 376 people with an annual payroll of $55,646,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:2,060Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:12Source: CBP
1st Quarter Payroll:$23,549,000Source: CBP
Annual Payroll:$55,646,000Source: CBP
# of Employees:376Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 98111 is located in King County, Washington, within the Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area (CBSA 42660) and Washington's 7th Congressional District. This Metro area has a population of 4,021,467 people, about 0.00% of whom live in ZIP Code 98111, and is subdivided into the Seattle-Bellevue-Kent, WA division. It covers 0 sq mi of land and a water area of 0 sq mi.

CBSA Name:Seattle-Tacoma-Bellevue, WASource: Census
CBSA Number:42660Source: Census
CBSA Type:MetroSource: Census
CBSA Division:Seattle-Bellevue-Kent, WA (CBSA Div 42644)Source: Census
CBSA Population:4,021,467Source: Census
MSA:Seattle-Tacoma-Bremerton, WA CMSASource: Census
Land Area:--Source: Census
Water Area:--Source: Census
Congressional District:07Source: USPS
Congressional Land Area:144.13 sq miSource: Census
PMSA:Seattle-Bellevue-Everett, WA PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:5363000Source: Census
Place Name:Seattle city; WashingtonSource: Census

Adjacent & Nearby ZIP Codes


98112 | | 98110

Schools in ZIP Code 98111


We could not locate which school district 98111 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Interagency Detention School 1211 E Alder Ms 1-F
Seattle, WA 98122
District: Seattle Public SchoolsNearby
Bailey Gatzert Elementary School 1301 E Yesler Wy
Seattle, WA 98122
District: Seattle Public SchoolsNearby
Summit Public School: Sierra 1025 S King St
Seattle, WA 98104
District: UnknownNearby
Seattle World School 1700 East Union St.
Seattle, WA 98122
District: Seattle Public SchoolsNearby
Garfield High School 400 23 Ave
Seattle, WA 98122
District: Seattle Public SchoolsNearby
The Polytech 1500 4th Ave Ste 900
Seattle, WA 98101
District: Private SchoolNearby
The Northwest School 1415 Summit Ave
Seattle, WA 98122
District: Private SchoolNearby
Spruce St School 914 Virginia St
Seattle, WA 98101
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 98111


Golden Gate University-Seattle 1424 4th Avenue, Suite 410
Seattle, WA 98101-2218
Type: Post Secondary
Seattle University 900 Broadway
Seattle, WA 98122-4340
Type: Post Secondary
Aveda Arts & Sciences Institute Seattle 802 East Pike Street
Seattle, WA 98122
Type: Post Secondary
Tint School Of Makeup & Cosmetology-Seattle 106 Lenora Street
Seattle, WA 98121
Type: Post Secondary
Seattle Central College 1701 Broadway Avenue
Seattle, WA 98122
Type: Post Secondary
Cornish College Of The Arts 1000 Lenora Street
Seattle, WA 98121
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.

  1. U.S. Postal Service [Last Updated: 1/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 1/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 1/1/2026], https://nces.ed.gov