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 — ZIP/21152

21152

ZIP 21152 is Sparks Glencoe, Maryland, in Baltimore County; area codes 443, 410 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Baltimore
Population
6,459
Coordinates
39.5552, -76.6859
☼ Live from 21152 — Sparks Glencoe, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 21152 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 21152
  • 🔢 Type 21152 into a pocket calculator and turn it upside down: ZSIIZ — not quite a word, sorry.
  • ➕ As a number, 21,152 = 2 × 2 × 2 × 2 × 2 × 661. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001010100000
  • 🏠 Its numerical neighbours: 21150 (Simpsonville, MD, 26 mi away) and 21153 (Stevenson, MD, 10 mi away).
  • 🔄 Backwards, 21152 becomes 25112 — and that is a real ZIP code: Institute, WV, 285 miles away.
  • 👥 17 other ZIP codes are made of exactly the same digits (11225, 11252, 12125, 12512, 12521, 15122, …). The farthest-flung twin is 52211 in Brooklyn, IA, 839 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 83%.
  • 🎯1,161 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21152 and you would come out at 39.56°S, 103.31°E — 877 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
  • 📏 At 24.2 square miles of land, 21152 is bigger than 41% of ZIP codes — room for about 18 Central Parks.
🌙 The sky over 21152 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population6,459This ZIP6,459
Households2,609This ZIP2,609
Housing units2,619This ZIP2,619
Median age44.9This ZIP44.9Maryland39.4US 38.9
Median household income$121,350This ZIP$121,350Maryland$103,678US $80,734
Median home value$495,700This ZIP$495,700Maryland$419,900US $332,700
Median gross rent$1,657This ZIP$1,657Maryland$1,705US $1,413
Bachelor's degree or higher56.4%This ZIP56.4%
Mean commute24.5 minThis ZIP24.5 min
Population density266.9 / sq miThis ZIP266.9 / sq mi

Business and tax activity

Business establishments231This ZIP231
Employees8,622This ZIP8,622
Annual payroll$1,067,798,000This ZIP$1,067,798,000
Tax returns filed3,080This ZIP3,080
Total adjusted gross income$528,287,000This ZIP$528,287,000

Land area

Land area24.20 sq miThis ZIP24.20 sq mi
Water area0.08 sq miThis ZIP0.08 sq mi

ZIP codes near 21152

ZIPCityDistance
21030 Cockeysville, MD 2.8 mi
21023 Butler, MD 3.6 mi
21031 Hunt Valley, MD 4.9 mi
21065 Hunt Valley, MD 4.9 mi
21111 Monkton, MD 5.3 mi
21131 Phoenix, MD 6.2 mi
21120 Parkton, MD 6.3 mi
21155 Upperco, MD 6.5 mi
21020 Boring, MD 6.7 mi
21071 Glyndon, MD 8.3 mi

Find every ZIP code within 10 miles of 21152 →

Questions about this ZIP code

Where is ZIP code 21152?

21152 is in Sparks Glencoe, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.5552, -76.6859.

What county is 21152 in?

21152 lies in Baltimore County.

What area code is 21152?

Sparks Glencoe uses area codes 443, 410 and 667, from NANPA's telephone records.

What time zone is 21152 in?

21152 uses America/New_York.

How many people live in 21152?

About 6,459 people live in ZIP code 21152, in 2,609 households, at 266.9 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 21152?

$121,350 a year, against $103,678 across Maryland.

What ZIP codes are near 21152?

The closest are 21030 (2.8 mi), 21023 (3.6 mi), 21031 (4.9 mi), 21065 (4.9 mi) and 21111 (5.3 mi).

Is 21152 a PO Box ZIP code?

21152 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “21152 ZIP Code — Sparks Glencoe, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21152

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/21152.json

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