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Single Family ResidenceResidential
$97,608$436 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

820 W 4TH ST

AJO, AZ 85321
1
Baths
224 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$98K
$80K low$116K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$63 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$2,320 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,148
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$23,200

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.53
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
82
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
5
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
98
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyPima
Lot (acres)The size of the land the home sits on, from county records.0.06
RoofThe main material covering the roof, such as asphalt shingle or tile.Roll Composition (rolled Mineral Roof)
CoolingThe type of cooling or air conditioning in the home.Wall Unit
GarageWhether the property has a garage, and details like whether it is attached to the home.No Garage
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Ajo High SchoolD+
High · Grades 9–12 · 0.8 mi
E
Ajo Elementary SchoolD
Elementary · Grades PK–8 · 0.8 mi

District: Ajo Unified District

Neighborhood · ZIP 85321These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.130
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.87

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.75%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.5%
PopulationHow many people live in this area.5,407
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$40,321
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$54,773
Average tempThe average temperature here across a full year.71°F
Annual precipHow much rain and melted snow falls here in a typical year.7 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.87%

Owner Tools

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

820 W 4th St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the least valuable homes in Pima County
  • Among the highest price per square foot in Ajo 85321
  • Among the smallest homes in Pima County
  • Among the smallest lots in Ajo 85321
  • Among the oldest homes in Pima County

What homes are worth in Ajo 85321

Each bar is how many homes fall in that price range. The marker is this home.

This home
$58K$272K

This home is worth more than 24% of homes in Ajo 85321.

How it measures up in Ajo 85321

The dot is this home. The mark in the middle is the typical home in Ajo 85321.

Estimated value$97,608
CheaperTypical $128,261Pricier

Pricier than 24% of homes nearby

Price per ft²$436
CheaperTypical $117Pricier

Pricier than almost all homes nearby

Living area224 ft²
SmallerTypical 1,076 ft²Bigger

Smaller than almost all homes nearby

Lot size2,500 ft²
SmallerTypical 0.18 acBigger

Smaller than almost all homes nearby

Year built1940
OlderTypical 1959Newer

Newer than 20% of homes nearby

How 820 W 4th St ranks against every home in each area.
MeasureThis homeAjo 85321Pima County
Estimated valuepricier than$97,60824% of homesalmost no homes
Price per ft²pricier than$436almost all homes98% of homes
Living areabigger than224 ft²almost no homesalmost no homes
Lot sizebigger than2,500 ft²almost no homes5% of homes
Year builtnewer than194020% of homesalmost no homes

About 820 W 4th St

How much is 820 W 4th St, Ajo, AZ worth?

The TopHap Estimate for 820 W 4th St, Ajo, AZ is $97,608 as of Oct 21, 2026. The likely range is $79,579 to $115,637. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 820 W 4th St, Ajo, AZ last sell?

820 W 4th St, Ajo, AZ last sold on Dec 7, 2006, according to the county's recorded deed.

How big is 820 W 4th St, Ajo, AZ?

820 W 4th St, Ajo, AZ has 1 bathrooms, 224 square feet of living space and a 0.06-acre lot.

When was 820 W 4th St, Ajo, AZ built?

820 W 4th St, Ajo, AZ was built in 1940, making it 86 years old. The building has 1 story.

What schools serve 820 W 4th St, Ajo, AZ?

820 W 4th St, Ajo, AZ is assigned to Ajo High School (high), rated D+; Ajo Elementary School (elementary), rated D. All sit in Ajo Unified District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 820 W 4th St, Ajo, AZ compare to other homes in Ajo 85321?

Among the 1,735 homes in Ajo 85321, it is worth more than 24% of them ($97,608 against a typical $128,261), its price per square foot is higher than almost all of them ($436 against a typical $117), it is bigger than almost none of them (224 ft² against a typical 1,076 ft²), its lot is bigger than almost none of them (2,500 ft² against a typical 0.18 ac) and it is newer than 20% of them (1940 against a typical 1959). Measured against all of Pima County, it is worth more than almost no homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 820 W 4th St, Ajo, AZ?

The 2025 property tax bill for 820 W 4th St, Ajo, AZ was $63. The county assessed it at $2,320.

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