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/COOKSVILLE

Cooksville ZIP code, Maryland

The ZIP code for Cooksville, MD is 21723, and its area codes are 443, 667 and 410.

USPS city name
1 ZIP code
Population
669
Area codes
443, 667, 410

NANPA lists no telephone rate centre for Cooksville itself, so these are the area codes of the nearest one, Glenwood (3.6 miles). A town on an area-code boundary can differ from its neighbour.

Cooksville in numbers

About 669 people live in Cooksville, in 232 households. The median household income is $241,250 a year, 2.3 times the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $1,005,500 (2.4 times the Maryland median).

Population669Cooksville669
Households232Cooksville232
Median household income$241,250Cooksville$241,250Maryland$103,678US $80,734
Median home value$1,005,500Cooksville$1,005,500Maryland$419,900US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Cooksville. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Cooksville

ZIP codes with the USPS city name Cooksville
ZIP City Type Population Median income Median home
21723 Cooksville , MD Standard 669 $241,250 $1,005,500

Map of Cooksville ZIP codes

21723

The ZIP codes of Cooksville, 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 Cooksville

The nearest larger towns are Sykesville (4,491 people, 3.4 mi), Eldersburg (31,695 people, 5.8 mi) and Mount Airy (9,805 people, 8.7 mi).

Towns near Cooksville
TownPopulationDistance
Sykesville 4,491 3.4 mi
Eldersburg 31,695 5.8 mi
Mount Airy 9,805 8.7 mi
Ellicott City 75,257 9.7 mi
Randallstown 35,957 11.1 mi
Damascus 17,640 11.1 mi
Columbia 104,338 11.7 mi
Ashton-Sandy Spring 5,630 12.5 mi
Milford Mill 30,829 12.5 mi
Owings Mills 37,245 12.7 mi
Green Valley 13,602 12.7 mi
Fulton 5,677 13.1 mi
Reisterstown 25,582 13.2 mi
Olney 35,797 13.3 mi

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

Cite this page

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

Underlying data is public domain or openly licensed — sources, vintages and licences.