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 — METRO/39940-REXBURG

Rexburg, ID

ZIP codes
12
CBSA code
39940
Type
Micropolitan statistical area
States
ID
Population
68,561
Combined area
Idaho Falls-Rexburg-Blackfoot, ID

Metro areas are defined by the Office of Management and Budget as whole counties, so every ZIP code in a member county is listed here.

Rexburg in numbers

About 68,561 people live in the Rexburg micropolitan area. The median household income is $61,940 a year (US: $80,734). The median owner-occupied home is valued at $372,900, and median gross rent is $1,002 a month.

Population68,561Rexburg68,561
Median household income$61,940Rexburg$61,940US $80,734
Median home value$372,900Rexburg$372,900US $332,700
Median gross rent$1,002Rexburg$1,002US $1,413

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

Its 2 counties

Counties in Rexburg, ID
CountyZIP codesPopulationMedian income
Madison County, ID 6 54,618 $60,160
Fremont County, ID 6 13,943 $72,683

ZIP codes in Rexburg

ZIP codes in Rexburg, ID
ZIP City Type Population Median income Median home
83420 Ashton , ID Standard 2,580 $69,286 $337,700
83421 Chester , ID Standard 220 — $282,400
83429 Island Park , ID Standard 628 $78,565 $502,200
83433 Macks Inn , ID Standard 36 $94,250 $265,000
83436 Newdale , ID Standard 778 $80,000 $337,100
83438 Parker , ID Standard 327 $145,714 $232,800
83440 Rexburg , ID Standard 51,421 $58,159 $419,300
83441 Rexburg , ID No street area — — —
83445 Saint Anthony , ID Standard 7,975 $68,012 $283,800
83448 Sugar City , ID Standard 3,365 $76,000 $381,900
83451 Teton , ID Standard 993 $67,946 $259,300
83460 Rexburg , ID Standard 56 — —

Cite this page

zipcodes.pro. “Rexburg, ID.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/metro/39940-rexburg

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