Best Places83421, ID Best Neighborhoods
2026–2027 edition · Data updated July 2026
Every neighborhood inside ZIP code 83421, scored on 40 measures of daily life and ranked to fit what matters to you. This page is for people who live here or already know they want to. To work out which city fits you best, start with the best places to live tool.
83421 ranks 11,108th of 33,110 U.S. zip codes on the BestNeighborhood index. It scores highest on state finances by a wide margin, and distance from a big city ranks lowest.
The best neighborhoods in 83421
BestNeighborhood is the only ranking that scores 40 measures of daily life neighborhood by neighborhood and lets you re-weight every one of them yourself.
83421's strengths and weaknesses
Where 83421 ranks high
- State fiscal healthBetter than 98% of zip codes
- Local economyBetter than 98% of zip codes
- Low property taxBetter than 94% of zip codes
- Heat safetyBetter than 94% of zip codes
- Cheap car insuranceBetter than 94% of zip codes
Where 83421 ranks low
- Big-city accessBetter than only 3% of zip codes
- WalkabilityBetter than only 5% of zip codes
- BikingBetter than only 5% of zip codes
- Tree shadeBetter than only 6% of zip codes
- Internet speedBetter than only 12% of zip codes
What it costs to buy a home in 83421
A household needs to earn about $84,000 a year to comfortably buy the median 83421 home, at 20% down and today's 30-year rate. That is only a little above the area's median income of $76,799; the gap is small, which keeps homes within reach of local pay.
Where the monthly payment goes
Assumes a 20% down payment, a 6.6% 30-year fixed rate, and a 28% share of income going to the payment. The rate is the 2026-07-23 30-year fixed average, series MORTGAGE30US from the St. Louis Fed, which publishes Freddie Mac's weekly survey. Against the median home value, property tax uses 83421's effective rate of 0.34%, and insurance is estimated at 0.4% of home value a year.
Renting versus buying
At today's prices, buying tends to cost more than renting for about the first 9 years, then pulls ahead as rent keeps rising and the mortgage builds equity. The chart tracks the running cost of each.
Who lives in 83421
83421 runs older than the country.
Residents by age
Racial and ethnic makeup has its own map. See the race and diversity map for 83421.
Who works in 83421, and how
Work in 83421 centers on health care & social and agriculture & forestry. Unemployment is low, and jobs are growing.
Largest industries
How people get to work
- Drive or carpool 83%
- Work from home 14%
- Transit, walk, or bike 3%
Life in 83421
The map and measures below break down dining, culture, and green space by neighborhood across 83421.
What the weather is like in 83421, month by month
83421 sees roughly 138 pleasant days a year. July highs average about 90 degrees. January highs sit near 30, with lows near 11. The comfortable stretch runs June through September.
Show the monthly temperatures
| Month | Avg high | Avg | Avg low |
|---|---|---|---|
| January | 30° | 20° | 11° |
| April | 59° | 44° | 30° |
| July | 90° | 71° | 51° |
| October | 61° | 45° | 32° |
Flying in and out of 83421
The nearest airport, Idaho Falls Regional, is about 42 miles away and is a small airport. The nearest major hub is Salt Lake City International, about 222 miles away.
The best schools in and around 83421
Schools across 83421 average a B−, better than 57% of zip codes.
Top elementary schools
- Ashton Elementary SchoolB+ · 53% proficient
- Henrys Fork ElementaryB− · 43% proficient
Top middle schools
- South Fremont Jr HighC+ · 36% proficient
Top high schools
- South Fremont High SchoolB− · 45% proficient
Grades come from K-12 test scores, with scores projected for schools missing data. See every 83421 school and its grade on SchoolGrade.
83421 measure by measure
Cards are ordered by how much each measure matters to you, so the ones you weighted highest come first. Expand to see every measure. Percentages compare 83421 against the other 33,109 zip codes.
Common questions about living in 83421
Is 83421 a good place to live?
Using BestNeighborhood's default rankings, 83421 ranks 11,108th of 33,110 zip codes. It scores highest on state finances, a strong job market, and low property taxes, and lowest on distance from a big city and walkability. How good it is for you depends on which of those you weight most, which the map lets you set.
Is 83421 expensive to live in?
The median home is worth $343,458. The overall cost of living runs about 10% below the national average. Set against a $76,799 median income, cost of living beats 55% of zip codes.
Is 83421 safe?
Yes, 83421 is safer than 79% of zip codes. Safety varies a lot by neighborhood. Crime costs an estimated $249 per resident a year.
Compare 83421 with other zip codes
Sources and methodology
Every measure on this page is scored for each neighborhood, then rolled up to 83421. Scores are absolute rather than ranked, which means a 60 in 83421 represents the same real quantity as a 60 anywhere else, and the ranking is a weighted average of those absolutes. The map colors come from a national scale calibrated against a population weighted random sample of 5,000 neighborhoods. That absolute scoring is what no other places-to-live ranking does: it puts a single neighborhood, a town, a metro, and a state on one scale, so the same 40 measures answer both which metro to move to and which street inside it to buy on. Read the full methodology.
83421 detail on BestNeighborhood maps:
- Walk Grade for 83421: walkability, transit, and biking, measured on the real street network rather than by straight line distance.
- Noise in 83421: road, rail, and aviation sound modeling calibrated against federal ground truth measurements.
- Conservative vs liberal map of 83421: precinct level election results apportioned to neighborhoods.
- Mobile and cell coverage in 83421: carrier by carrier coverage behind the cell score.
83421 detail on related sites:
- CrimeGrade: neighborhood crime rates behind the crime safety score.
- ISPreports.org: provider by provider internet availability and advertised speeds.
- CoverageWatch: the car insurance premiums behind the cheap car insurance score.
Federal and public data:
- U.S. Census Bureau American Community Survey: income, home value, rent, vacancy, commute time and mode, educational attainment, home age, age structure, household type, industry, and race.
- NOAA Global Surface Summary of the Day: the daily station record behind the monthly temperatures and the pleasant-day count.
- FAA Passenger Boarding Data: airport size and annual passenger counts.
- Freddie Mac Primary Mortgage Market Survey: the 30-year fixed rate used in the cost-to-buy estimate.
- FBI Crime Data Explorer: reported offenses behind the tangible crime cost estimate.
- U.S. EPA Air Quality System: five year average air quality index.
- FEMA National Risk Index: expected annual loss from natural hazards.
- CDC PLACES: disease burden, preventable risk, and barriers to care.
- National Center for Education Statistics: school enrollment and assessment inputs behind the school grade.
- FCC National Broadband Map: internet and wireless availability.
- U.S. Bureau of Labor Statistics: employment and job growth behind the local economy score.
- Religious activity uses a proprietary religious signal measurement.
Your priorities
Move a slider to say how much a measure matters. Zero turns it off.