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Single Family ResidenceResidential
$129,000$133 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $75,000 on May 16, 2023

640 W ROCALLA AVE

AJO, AZ 85321
1
Baths
968 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1918
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$129K
$115K low$143K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$75,000 · May 16, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$358 (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.$3,961 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,772
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$59,842

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.54
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
84
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.0.15
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Yes
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(4)

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 SchoolC-
High · Grades 9–12 · 0.6 mi
E
Ajo Elementary SchoolB+
Elementary · Grades PK–8 · 0.6 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%

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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

640 W Rocalla Ave 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
  • Costs less per square foot than 98% of homes in Pima County
  • Smaller than 90% of homes in Pima County
  • Has a smaller lot than 79% of homes 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
$57K$277K

This home is worth more than 51% 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$129,000
CheaperTypical $127,939Pricier

Pricier than 51% of homes nearby

Price per ft²$133
CheaperTypical $120Pricier

Pricier than 67% of homes nearby

Living area968 ft²
SmallerTypical 1,080 ft²Bigger

Bigger than 40% of homes nearby

Lot size0.15 ac
SmallerTypical 0.18 acBigger

Bigger than 21% of homes nearby

Year built1918
OlderTypical 1959Newer

Newer than 3% of homes nearby

How 640 W Rocalla Ave ranks against every home in each area.
MeasureThis homeAjo 85321Pima County
Estimated valuepricier than$129,00051% of homesalmost no homes
Price per ft²pricier than$13367% of homes2% of homes
Living areabigger than968 ft²40% of homes10% of homes
Lot sizebigger than0.15 ac21% of homes31% of homes
Year builtnewer than19183% of homesalmost no homes

About 640 W Rocalla Ave

How much is 640 W Rocalla Ave, Ajo, AZ worth?

The TopHap Estimate for 640 W Rocalla Ave, Ajo, AZ is $129,000 as of Sep 24, 2026. The likely range is $115,346 to $142,654. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 W Rocalla Ave, Ajo, AZ last sell?

640 W Rocalla Ave, Ajo, AZ last sold on May 16, 2023 for $75,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 640 W Rocalla Ave, Ajo, AZ?

640 W Rocalla Ave, Ajo, AZ has 1 bathrooms, 968 square feet of living space and a 0.15-acre lot.

When was 640 W Rocalla Ave, Ajo, AZ built?

640 W Rocalla Ave, Ajo, AZ was built in 1918, making it 108 years old. The building has 1 story.

What schools serve 640 W Rocalla Ave, Ajo, AZ?

640 W Rocalla Ave, Ajo, AZ is assigned to Ajo High School (high), rated C-; Ajo Elementary School (elementary), rated B+. All sit in Ajo Unified District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 W Rocalla Ave, Ajo, AZ compare to other homes in Ajo 85321?

Among the 1,728 homes in Ajo 85321, it is worth more than 51% of them ($129,000 against a typical $127,939), its price per square foot is higher than 67% of them ($133 against a typical $120), it is bigger than 40% of them (968 ft² against a typical 1,080 ft²), its lot is bigger than 21% of them (0.15 ac against a typical 0.18 ac) and it is newer than 3% of them (1918 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 640 W Rocalla Ave, Ajo, AZ?

The 2025 property tax bill for 640 W Rocalla Ave, Ajo, AZ was $358. The county assessed it at $3,961.

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