About ZIP Code 21042

ZIP code 21042 is assigned to Ellicott City, Howard County, Maryland, United States. It falls in the Eastern Time (ET) zone. The estimated population of this ZIP code area is 43,327 with a density of 452.1 people per square mile.

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Location Details

ZIP Code21042
CityEllicott City
CountyHoward County
CountryUnited States
TimezoneEastern Time (ET)
Timezone IDAmerica/New_York
Latitude39.2711
Longitude-76.8924
ZIP TypeStandard ZIP

Post Office

Address3375 ELLICOTT CENTER DR
CityELLICOTT CITY
StateMD

Nearby ZIP Codes in Maryland

Frequently Asked Questions

What city is ZIP code 21042 in?

ZIP code 21042 is in Ellicott City, Howard County, Maryland, United States.

What county is ZIP code 21042 in?

ZIP code 21042 is in Howard County, Maryland.

What timezone is ZIP code 21042 in?

ZIP code 21042 is in the Eastern Time (ET) zone (America/New_York).

What is the population of ZIP code 21042?

The estimated population of ZIP code 21042 is 43,327 people with a density of 452.1 people per square mile.

What state is ZIP code 21042 in?

ZIP code 21042 is in Maryland (MD), United States.

📋 Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.