Who publishes Zip Codes?

Baltimore City, part of City of Baltimore, publishes this dataset on Open Baltimore.

How often is it updated?

The publisher does not list a schedule. The last update was on 03/18/2026.

It is available as CSV, GeoJSON, Shapefile, KML. Use the links in Files and access, which open the official government source.

Checked Oct 27, 2026

City dataMaps & Geospatial

Name: Zip Codes
Creator: City of Baltimore
Published: 2020-11-17T21:03:58.000Z

Published by Baltimore City · Updated 03/18/2026

To leave feedback or ask a question about this dataset, please fill out the following form: Zip Codes feedback form.

Links open the official government source

API endpoint: https://services1.arcgis.com/UWYHeuuJISiGmgXx/arcgis/rest/services/ZIPCODES_1/FeatureServer

Links open outside websites we do not control.

Who publishes Zip Codes?: Baltimore City, part of City of Baltimore, publishes this dataset on Open Baltimore.
How often is it updated?: The publisher does not list a schedule. The last update was on 03/18/2026.
How do I download it?: It is available as CSV, GeoJSON, Shapefile, KML. Use the links in Files and access, which open the official government source.

Source: Open Baltimore · Last updated 10/27/2026 · Listing only; the data stays with the publisher