Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/COLUMBIA

Columbia ZIP codes, Maryland

Columbia, MD has 3 ZIP codes (21044, 21045 and 21046) and area codes 443, 410 and 667. The largest is 21044.

USPS city name
3 ZIP codes
Overlapping the city
4 more
Population
104,338
Area codes
443, 410, 667

Mail addressed to Columbia uses the ZIP codes above. 4 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Columbia in numbers

About 104,338 people live in Columbia, in 41,143 households, the 2nd-largest of Maryland's 527 census places. The median household income is $131,490 a year, 27% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $497,400 (18% above the Maryland median), and median gross rent is $2,042 a month. The median age is 39.4; 63.6% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 28 minutes.

Population104,338Columbia104,338
Households41,143Columbia41,143
Median age39.4Columbia39.4Maryland39.4US 38.9
Median household income$131,490Columbia$131,490Maryland$103,678US $80,734
Median home value$497,400Columbia$497,400Maryland$419,900US $332,700
Median gross rent$2,042Columbia$2,042Maryland$1,705US $1,413
Bachelor's degree or higher63.6%Columbia63.6%Maryland43.4%US 35.7%
Mean commute27.9 minColumbia27.9 minMaryland31.1 minUS 26.4 min
Population density3,267 / sq miColumbia3,267 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Columbia CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Columbia

ZIP codes with the USPS city name Columbia
ZIP City Type Population Median income Median home
21044 Columbia , MD Standard 44,114 $135,057 $566,500
21045 Columbia , MD Standard 40,034 $118,563 $453,700
21046 Columbia , MD Standard 15,608 $127,813 $479,500

Other ZIP codes overlapping Columbia

These ZIP codes cover part of Columbia but are addressed as somewhere else.

ZIP codes overlapping Columbia
ZIP City Type Population Median income Median home
21029 Clarksville , MD Standard 13,607 $243,542 $912,100
21042 Ellicott City , MD Standard 43,327 $190,061 $706,400
21043 Ellicott City , MD Standard 48,525 $148,125 $620,900
21075 Elkridge , MD Standard 37,363 $135,303 $455,300

Map of Columbia ZIP codes

210442104521046

The ZIP codes of Columbia, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Columbia

The nearest larger towns are Baltimore (573,243 people, 15 mi), Washington, DC (681,294 people, 22 mi) and Arlington, VA (236,254 people, 26 mi).

Towns near Columbia
TownPopulationDistance
Savage 8,239 4.3 mi
Fulton 5,677 4.4 mi
Scaggsville 10,564 4.4 mi
North Laurel 25,563 5.0 mi
Ilchester 28,364 5.3 mi
Ellicott City 75,257 5.4 mi
Jessup 9,931 5.7 mi
West Laurel 4,428 6.2 mi
Elkridge 26,283 6.3 mi
Burtonsville 10,203 6.9 mi
Laurel 29,798 7.3 mi
Maryland City 19,186 7.5 mi
Catonsville 43,368 7.7 mi
Ashton-Sandy Spring 5,630 8.3 mi

More nearby: every ZIP code in Howard County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Columbia, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/columbia

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