20436 ZIP Code: Washington, District of Columbia
ZIP code 20436 covers Washington, District of Columbia. It sits in District of Columbia. Washington is covered by 271 ZIP codes in total, so 20436 is one delivery area within it rather than the whole city. A ZIP code is a US Postal Service mail route, not a boundary on a map, so it describes where post is delivered rather than an administrative area.
| ZIP code | 20436 |
|---|---|
| Place | Washington |
| State | District of Columbia (DC) |
| County or equivalent | District of Columbia |
| ZIP codes covering Washington | 271 |
| Phone area codes in District of Columbia | 1 |
| Country | United States |
Phone area codes in District of Columbia
ZIP codes and area codes are separate systems drawn for different purposes, so no ZIP code maps to exactly one area code. Of the 1 codes used in District of Columbia, 202 is centred on Washington.
ZIP codes near 20436
- 20049 Washingtonabout 1 mile
- 20412 Washingtonabout 1 mile
- 20531 Washingtonabout 1 mile
- 20442 Washingtonabout 1 mile
- 20576 Washingtonabout 1 mile
- 20073 Washingtonabout 1 mile
- 20548 Washingtonabout 1 mile
- 20535 Washingtonabout 1 mile
Distances are straight-line, between the approximate centres of each delivery area.
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Frequently asked questions
Where is ZIP code 20436?
ZIP code 20436 is in Washington, District of Columbia, in District of Columbia. ZIP codes are mail delivery routes rather than mapped regions, so the code identifies a set of addresses the Postal Service serves together, not a district with fixed borders.
What county is 20436 in?
20436 is in District of Columbia, District of Columbia. A single ZIP code can straddle a county line, because mail routes were drawn for delivery efficiency and take no notice of county boundaries, so the county shown is the one the code is primarily associated with.
What area code goes with ZIP code 20436?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. District of Columbia uses 1 geographic area code: 202. Of those, 202 is centred on Washington itself.
How many ZIP codes does Washington have?
Washington, District of Columbia has 271 ZIP codes in this dataset, of which 20436 is one. Large cities are split across many codes so mail can be sorted by district, and the codes are usually numerically close to each other.
Is 20436 a real ZIP code?
Yes. 20436 appears in the GeoNames postal-code dataset as an active US code assigned to Washington, District of Columbia. Codes that have been retired or never issued do not appear, which is why entering one on this site returns a not-found page rather than a blank record.
Why do ZIP code boundaries look odd on maps?
Because they are not boundaries. A ZIP code is a collection of mail routes, and a route is a line a carrier walks or drives, not an area. Any ZIP code map you have seen is somebody's approximation drawn around the addresses in a code, which is also why two ZIP code maps rarely agree with each other.
Can two addresses in the same ZIP code be in different cities?
Yes, routinely. The Postal Service assigns a preferred city name to each code for addressing purposes, and that name often covers several neighbouring towns, unincorporated areas or a whole postal district. The place shown here is the one the source names for the code, not a claim that every address in it is inside that town's limits.
ZIP code, place, county and location data from GeoNames, used under CC BY 4.0, extracted 2026-08-22. ZIP codes are Postal Service delivery routes, not administrative areas, so a code can cross city and county lines and the place name shown is the one the source records for the code. Coordinates are an approximate centre of the delivery area, not a precise location. Population and time zone are not shown because the source does not publish them.