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Postal code 20289 in Washington, United States

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Postal code 20289 covers 1 verified locality record in United States with interactive boundary centroid map and administrative hierarchy.

Mapped Localities for 20289

1 Place
Washington
20289
District of Columbia
📍 38.8933, -77.0146

Interactive Map: 20289 (United States)

Geographic Centroid & Coverage: Highlighted marker and radius show the verified WGS84 postal area centroid for 20289.

Nearby postal code lookups in United States

Compare 20289 with adjacent postal codes in the same area or prefix range:

20266
Washington
20268
Washington
20270
Washington
20277
Washington
20299
Washington
20301
Washington
20303
Washington
20306
Washington

Postal code prefix range: 20

Postal code 20289 belongs to the 20 prefix district in United States.

View all 20 postal codes → United States Directory

Verified data profile for Postal code 20289

Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.

1
Records
1
Postal identifiers
100.0%
Geocoded
20289
Example code
Postal code Locality Administrative path Coordinates
20289 Washington District of Columbia / District of Columbia 38.8933, -77.0146

Related postal lookups

United States
Country
Postal code prefixes
Postal code prefixes
Prefix 20
Postal code range · 577 records
20266
Nearby postal code · 1 records
20268
Nearby postal code · 1 records
20270
Nearby postal code · 1 records
20277
Nearby postal code · 1 records
20299
Nearby postal code · 1 records
20301
Nearby postal code · 1 records

Postal code validation data

Use this page to validate one postal code or locality against real parent areas, nearby records and downloadable source rows. The canonical route for this record set is /postal-codes/united-states/code/20289.

Records
1
Database rows represented by this canonical route.
Postal identifiers
1
Distinct postal code values available for this page.
Localities
1
Mapped place names or administrative entries.
Coordinate coverage
100.0%
Rows with latitude and longitude available.
Example
20289
Sample code from Washington.
Code Place Hierarchy Coordinates
20289 Washington District of Columbia / District of Columbia 38.8933, -77.0146
Download postal data
CSV, JSON and XLSX exports for research, validation and data products.
Use the API
Query postal codes by country, place name, region or code prefix.
Implementation notes
Field definitions, canonical paths and practical lookup guidance.

Useful related pages

United States
Country
Postal code prefixes
Postal code prefixes
Prefix 20
Postal code range · 577 records
20266
Nearby postal code · 1 records
20268
Nearby postal code · 1 records
20270
Nearby postal code · 1 records
20277
Nearby postal code · 1 records
20299
Nearby postal code · 1 records
20301
Nearby postal code · 1 records

Data questions

How should I validate 20289?

Validate the postal identifier together with country, locality and administrative hierarchy fields, not as a standalone global pattern.

What context is available for this record?

The page includes the parent country, related prefix or nearby codes, coordinates when available and source rows for download/API workflows.