Random Maryland Address Generator

Maryland ZIP codes span the 206xx–219xx range (20601 – 21930) across 23 counties and 1 independent city with 6 active telephone area codes (227, 240, 301, 410, etc.).

Generate a realistic, USPS Publication 28-compliant random Maryland address with authentic postal routing, real ZIP codes, and local area codes. Featuring verified ZIP prefix coverage across 206xx–219xx, realistic street grids from Baltimore and Columbia, official area codes (227, 240, 301, 410), and accurate county assignments. Engineered specifically for QA automation, form validation, and software testing.

Official Maryland Postal & Geographic Reference Specifications

Geographic & Postal Parameter Official State Specification Standardization Reference
Postal State Abbreviation MD USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range 206xx–219xx USPS Sectional Center Facilities (SCFs)
5-Digit ZIP Numeric Span 20601 – 21930 Lowest to highest active postal delivery codes
Administrative Jurisdictions 24 Counties & City US Census Bureau regional boundaries
Active Area Codes (NANPA) 227, 240, 301, 410, 443, 667 (6 total) North American Numbering Plan Administrator
Capital & Distribution Centers Annapolis (Capital), Baltimore, Columbia, Germantown Primary municipal carrier distribution hubs
Primary Time Zone Eastern Time (America/New_York, UTC-5 / UTC-4 DST) Regional postal dispatch & timestamp alignment
Authoritative Validation Source Maryland Public Service Commission & NANPA Official state regulatory authority

Maryland Postal Geography & Key Cities

State Capital: Annapolis | Postal Code: MD | Counties & City: 23 Counties + Baltimore City | ZIP Prefix Range: 206xx–219xx

Verified Data Authority: Maryland Public Service Commission & NANPA

Major municipal distribution centers:

  • Baltimore
  • Columbia
  • Germantown
  • Silver Spring
  • Annapolis
  • Bethesda

Key Counties & Independent City

County and independent city boundaries dictate local sales tax jurisdictions and carrier route groupings across Maryland:

  • Montgomery County
  • Prince George's County
  • Baltimore County
  • Baltimore City (Independent City)
  • Anne Arundel County

Real Maryland Area Codes (MD)

6 active numbering plan area (NPA) codes serving 24 jurisdictions across Maryland.

Active North American Numbering Plan area codes: 227, 240, 301, 410, 443, 667

Postal Delivery Standards & Format Nuances in Maryland

  • Independent City of Baltimore is completely separated from Baltimore County as an independent county-equivalent jurisdiction (FIPS 510) with distinct property records.
  • Dual-county suburban Washington corridors in Montgomery and Prince George's counties with dense multi-unit apartment complexes.

Standard USPS Publication 28 Test Examples for Maryland

Residential Delivery Point:
100 Main St, Apt 4B
Baltimore, MD 21201-1204

Commercial / Multi-Unit Delivery Point:
Maryland Logistics & Software Corp
500 Enterprise Way, Suite 300
Columbia, MD 21044-4810

Frequently Asked Questions about Maryland Addresses

What ZIP codes does Maryland use for mail and package delivery?

Maryland (MD) operates within the 5-digit ZIP prefix range 206xx–219xx, covering numeric postal codes from 20601 – 21930. Mail routed to state capital Annapolis and key regional centers such as Baltimore, Columbia, Germantown adheres to these official USPS boundaries.

Which telephone area codes are valid for Maryland?

Maryland is served by 6 active North American Numbering Plan (NANPA) area codes: 227, 240, 301, 410, 443, 667. Synthetic telephone numbers generated for Maryland reflect these verified regional area code assignments across state jurisdictions.

How many counties and independent cities are in Maryland?

Maryland is divided into 23 counties plus the independent city of Baltimore (24 primary administrative jurisdictions), including major regions such as Montgomery County, Prince George's County, Baltimore County, Baltimore City (Independent City). Baltimore City is not part of Baltimore County — they are separate jurisdictions — so a generated address in the city carries Baltimore City rather than Baltimore County.

What postal formatting conventions and addressing quirks are unique to Maryland?

Independent City of Baltimore is completely separated from Baltimore County as an independent county-equivalent jurisdiction (FIPS 510) with distinct property records. Dual-county suburban Washington corridors in Montgomery and Prince George's counties with dense multi-unit apartment complexes. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the Maryland addresses generated on this page real places?

No. All street numbers, recipient names, and telephone numbers generated for Maryland are entirely synthetic and randomized for software testing, database seed scripts, and form validation. While they use authentic Maryland ZIP codes (206xx–219xx), real city names (Baltimore, Columbia), and verified area codes (227, 240), they do not correspond to real individuals or private residences.

Nearby & Bordering States

Explore test address generators for states sharing a geographic border with MD:

Maryland ZIP Prefixes and Sectional Center Facilities

Mail addressed to Maryland is sorted through the processing facilities below before local delivery. The first three digits of a ZIP code identify which one, so the prefix alone places an address within the state.

ZIP prefixSectional Center FacilityCounty
208xxBethesda / Rockville / GermantownMontgomery County
209xxSilver SpringMontgomery County
210xxColumbia / Ellicott CityHoward County
212xxBaltimoreBaltimore City
214xxAnnapolisAnne Arundel County

These 5 prefixes cover the 206xx–219xx range. Look up any ZIP prefix to see its facility and generate valid ZIP codes inside it.

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