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zipcodes.pro — ZIP/21620

21620

ZIP 21620 is in Chestertown, Maryland, mostly in Kent County; area codes 410, 443 and 667; Eastern time. Chestertown has 2 ZIP codes; the other is 21690.

Type
Standard
Time zone
America/New_York
County
Kent +1 more
Metro area
none
Population
13,810
Coordinates
39.2080, -76.0828
☼ Live from 21620 — Chestertown, MD

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Local time: —

Where 21620 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 21620
  • 🔢 Type 21620 into a pocket calculator and turn it upside down: OZgIZ — not quite a word, sorry.
  • ➕ As a number, 21,620 = 2 × 2 × 5 × 23 × 47. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010001110100
  • 🏠 Its numerical neighbours: 21619 (Chester, MD, 21 mi away) and 21622 (Church Creek, MD, 55 mi away).
  • 🔄 Backwards, 21620 becomes 02612, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (01226, 01262, 02126, 12062, 12206, 12260, …). The farthest-flung twin is 62201 in East Saint Louis, IL, 756 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther east than 85%.
  • 🎯1,197 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21620 and you would come out at 39.21°S, 103.92°E — 836 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 118.7 square miles of land, 21620 is bigger than 82% of ZIP codes — room for about 90 Central Parks.
🌙 The sky over 21620 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,810This ZIP13,810
Households5,700This ZIP5,700
Housing units6,373This ZIP6,373
Median age42.5This ZIP42.5Maryland39.4US 38.9
Median household income$80,530This ZIP$80,530Maryland$103,678US $80,734
Median home value$347,500This ZIP$347,500Maryland$419,900US $332,700
Median gross rent$1,249This ZIP$1,249Maryland$1,705US $1,413
Bachelor's degree or higher45.8%This ZIP45.8%
Mean commute27.2 minThis ZIP27.2 min
Population density116.3 / sq miThis ZIP116.3 / sq mi

Business and tax activity

Business establishments420This ZIP420
Employees5,298This ZIP5,298
Annual payroll$279,402,000This ZIP$279,402,000
Tax returns filed6,130This ZIP6,130
Total adjusted gross income$548,250,000This ZIP$548,250,000

Land area

Land area118.70 sq miThis ZIP118.70 sq mi
Water area16.82 sq miThis ZIP16.82 sq mi

Counties 21620 spans

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

CountyShare of this ZIP
Kent County 74.3%
Queen Anne's County 25.7%

Other place names in 21620

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

ZIP codes near 21620

ZIPCityDistance
21678 Worton, MD 7.5 mi
21623 Church Hill, MD 8.5 mi
21628 Crumpton, MD 8.8 mi
21667 Still Pond, MD 9.5 mi
21645 Kennedyville, MD 10.1 mi
21661 Rock Hall, MD 10.6 mi
21610 Betterton, MD 11.0 mi
21617 Centreville, MD 11.1 mi
21656 Price, MD 12.0 mi
21690 Chestertown, MD 12.0 mi

Find every ZIP code within 10 miles of 21620 →

Questions about this ZIP code

Where is ZIP code 21620?

21620 is in Chestertown, Maryland, in Kent County. Its published point location is 39.2080, -76.0828.

What county is 21620 in?

21620 spans 2 counties: Kent County and Queen Anne's County. Most of it falls in Kent 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 21620?

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

What time zone is 21620 in?

21620 uses America/New_York.

How many people live in 21620?

About 13,810 people live in ZIP code 21620, in 5,700 households, at 116.3 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 21620?

$80,530 a year, against $103,678 across Maryland.

What ZIP codes are near 21620?

The closest are 21678 (7.5 mi), 21623 (8.5 mi), 21628 (8.8 mi), 21667 (9.5 mi) and 21645 (10.1 mi).

Is 21620 a PO Box ZIP code?

21620 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21620 ZIP Code — Chestertown, Maryland (Kent County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21620

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/21620.json

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