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zipcodes.pro — ZIP/21136

21136

ZIP 21136 is Reisterstown, Maryland, mostly in Baltimore County; area codes 443, 410 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Baltimore +1 more
Population
32,088
Coordinates
39.4391, -76.8445
☼ Live from 21136 — Reisterstown, MD

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Local time: —

Where 21136 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 21136
  • 🔢 Type 21136 into a pocket calculator and turn it upside down: gEIIZ — not quite a word, sorry.
  • ➕ As a number, 21,136 = 2 × 2 × 2 × 2 × 1321. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001010010000
  • 🏠 Its numerical neighbours: 21133 (Randallstown, MD, 5 mi away) and 21139 (Riderwood, MD, 11 mi away).
  • 🔄 Backwards, 21136 becomes 63112 — and that is a real ZIP code: Saint Louis, MO, 722 miles away.
  • 👥 31 other ZIP codes are made of exactly the same digits (11236, 11362, 12136, 13126, 13162, 13261, …). The farthest-flung twin is 32116 in Daytona Beach, FL, 752 miles away.
  • 🧭 Farther north than 52% of all ZIP codes, and farther east than 82%.
  • 🎯1,154 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21136 and you would come out at 39.44°S, 103.16°E — 879 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
  • 📏 At 56.2 square miles of land, 21136 is bigger than 63% of ZIP codes — room for about 43 Central Parks.
🌙 The sky over 21136 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population32,088This ZIP32,088
Households13,048This ZIP13,048
Housing units13,837This ZIP13,837
Median age46.3This ZIP46.3Maryland39.4US 38.9
Median household income$118,500This ZIP$118,500Maryland$103,678US $80,734
Median home value$422,100This ZIP$422,100Maryland$419,900US $332,700
Median gross rent$1,524This ZIP$1,524Maryland$1,705US $1,413
Bachelor's degree or higher54.6%This ZIP54.6%
Mean commute28.8 minThis ZIP28.8 min
Population density571.0 / sq miThis ZIP571.0 / sq mi

Business and tax activity

Business establishments708This ZIP708
Employees6,142This ZIP6,142
Annual payroll$309,489,000This ZIP$309,489,000
Tax returns filed17,560This ZIP17,560
Total adjusted gross income$1,911,429,000This ZIP$1,911,429,000

Land area

Land area56.20 sq miThis ZIP56.20 sq mi
Water area1.65 sq miThis ZIP1.65 sq mi

Counties 21136 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Baltimore County 96.2%
Carroll County 3.8%

Other place names in 21136

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 21136

ZIPCityDistance
21071 Glyndon, MD 3.6 mi
21117 Owings Mills, MD 3.8 mi
21133 Randallstown, MD 4.6 mi
21048 Finksburg, MD 6.0 mi
21020 Boring, MD 6.1 mi
21163 Woodstock, MD 7.0 mi
21104 Marriottsville, MD 7.3 mi
21784 Sykesville, MD 7.4 mi
21208 Pikesville, MD 7.5 mi
21153 Stevenson, MD 7.8 mi

Find every ZIP code within 10 miles of 21136 →

Questions about this ZIP code

Where is ZIP code 21136?

21136 is in Reisterstown, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.4391, -76.8445.

What county is 21136 in?

21136 spans 2 counties: Baltimore County and Carroll County. Most of it falls in Baltimore County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 21136?

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

What time zone is 21136 in?

21136 uses America/New_York.

How many people live in 21136?

About 32,088 people live in ZIP code 21136, in 13,048 households, at 571.0 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 21136?

$118,500 a year, against $103,678 across Maryland.

What ZIP codes are near 21136?

The closest are 21071 (3.6 mi), 21117 (3.8 mi), 21133 (4.6 mi), 21048 (6 mi) and 21020 (6.1 mi).

Is 21136 a PO Box ZIP code?

21136 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21136 ZIP Code — Reisterstown, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21136

Machine-readable version of these facts:

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