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/10931

10931

ZIP 10931 is Hillburn, New York, in Rockland County; area code 845; Eastern time.

Type
Standard
Time zone
America/New_York
County
Rockland
Population
1,319
Coordinates
41.1272, -74.1705
☼ Live from 10931 — Hillburn, NY

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 10931 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 10931
  • 🔢 Type 10931 into a pocket calculator and turn it upside down: IEGOI — not quite a word, sorry.
  • ➕ As a number, 10,931 = 17 × 643. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10101010110011
  • 🏠 Its numerical neighbours: 10930 (Highland Mills, NY, 18 mi away) and 10932 (Howells, NY, 29 mi away).
  • 🔄 Backwards, 10931 becomes 13901 — and that is a real ZIP code: Binghamton, NY, 114 miles away.
  • 👥 27 other ZIP codes are made of exactly the same digits (01139, 01913, 01931, 03911, 09131, 10913, …). The farthest-flung twin is 09131 in APO AE, a military post office, 3,889 miles away.
  • 🧭 Farther north than 68% of all ZIP codes, and farther east than 90%.
  • 🎯1,282 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 10931 and you would come out at 41.13°S, 105.83°E — 843 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 12m.
  • 📏 At 2.5 square miles of land, 10931 is bigger than 13% of ZIP codes — room for about 1.9 Central Parks.
🌙 The sky over 10931 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,319This ZIP1,319
Households419This ZIP419
Housing units437This ZIP437
Median age32.0This ZIP32.0New York39.8US 38.9
Median household income$83,365This ZIP$83,365New York$85,974US $80,734
Median home value$487,000This ZIP$487,000New York$423,800US $332,700
Median gross rent$2,023This ZIP$2,023New York$1,621US $1,413
Bachelor's degree or higher25.6%This ZIP25.6%
Mean commute24.7 minThis ZIP24.7 min
Population density532.7 / sq miThis ZIP532.7 / sq mi

Business and tax activity

Business establishments35This ZIP35
Employees409This ZIP409
Annual payroll$26,094,000This ZIP$26,094,000

Land area

Land area2.48 sq miThis ZIP2.48 sq mi
Water area0.03 sq miThis ZIP0.03 sq mi

Other place names in 10931

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

ZIP codes near 10931

ZIPCityDistance
07495 Mahwah, NJ 1.6 mi
10974 Sloatsburg, NY 2.4 mi
10901 Suffern, NY 2.9 mi
07430 Mahwah, NJ 3.2 mi
10982 Tallman, NY 3.8 mi
07446 Ramsey, NJ 4.9 mi
10952 Monsey, NY 4.9 mi
07456 Ringwood, NJ 5.2 mi
10987 Tuxedo Park, NY 5.7 mi
10977 Spring Valley, NY 6.4 mi

Find every ZIP code within 10 miles of 10931 →

Questions about this ZIP code

Where is ZIP code 10931?

10931 is in Hillburn, New York, in Rockland County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.1272, -74.1705.

What county is 10931 in?

10931 lies in Rockland County.

What area code is 10931?

Hillburn uses area code 845, from NANPA's telephone records.

What time zone is 10931 in?

10931 uses America/New_York.

How many people live in 10931?

About 1,319 people live in ZIP code 10931, in 419 households, at 532.7 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 10931?

$83,365 a year, against $85,974 across New York.

What ZIP codes are near 10931?

The closest are 07495 (1.6 mi), 10974 (2.4 mi), 10901 (2.9 mi), 07430 (3.2 mi) and 10982 (3.8 mi).

Is 10931 a PO Box ZIP code?

10931 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “10931 ZIP Code — Hillburn, New York (Rockland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10931

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/10931.json

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