Zip-Codes.com ZIP & Postal Code MCP

validate_address

Standardize a US street address and return its ZIP+4, with optional census tract estimates, mapped districts and school district. Demo mode withholds deeper fields except on demo addresses.

zip_lookup

Look up a ZIP Code, ZIP+4, Canadian postal code or coordinates. Request Census geography, districts and area demographics. Demo mode withholds deeper fields except on demo codes.

radius_search

Find US ZIP Codes and Canadian postal areas within a radius, with distances and optional area demographics. Keyless demo mode shows the nearest 10 matches.

distance

Measure straight-line distance in miles and kilometers between US or Canadian postal codes or coordinates. Bearing is available with a key.

suggest_places

Find places from partial or misspelled names, including US ZIP Codes and Canadian postal codes. Keyless demo mode shows the first 5 matches.

quick_zip

Get a compact postal lookup, read ZIP+4 street ranges, or find the code containing a latitude/longitude pair.

zip_facts

Get US ZIP Code and Canadian postal code statistics, including counts by type, delivery points, carrier routes and per-state tables. Free, with no key required.

about_data

See the authority, edition and update schedule for each dataset, with a ready-made citation. Free, with no key required.

city_name_rules

Read how USPS assigns preferred and alternate city names to a ZIP Code, and which names may be used on mail. Free, with no key required.

county_reference

Look up US counties and county equivalents, including Census and USPS names, ANSI codes, legal types and land and water area. Free, with no key required.

metro_area_reference

Browse US metropolitan and micropolitan statistical areas (CBSAs). Free, with no key required.

buy_credits

Agents with an MPP wallet can buy a prepaid API key through buy_credits; the wallet's owner approves each payment.