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Residential - Vacant LandResidential
Last sold for $75,000 on Sep 25, 2013

20100 S RIVER RD

MAMMOTH, AZ 85618
0
Baths
6 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

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 · Sep 25, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$146 (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.$2,367 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,367
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,367
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$15,779

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.48 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential - Vacant Land
CountyPinal
Lot (acres)The size of the land the home sits on, from county records.6.00
ConstructionThe main material the home's frame and walls are built from.Steel Frame
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.Window A/C
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.

M
San Manuel Jr. High SchoolC-
Middle · Grades 6–8 · 6.6 mi
H
San Manuel High SchoolD
High · Grades 9–12 · 6.6 mi
E
San Manuel Elementary SchoolC+
Elementary · Grades PK–5 · 6.7 mi

District: Mammoth-San Manuel Unified District

Neighborhood · ZIP 85618These 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.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.1.6%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.26%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.1,516
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.31 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$39,005
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$50,848
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.17 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.86%

Ownership

Company ownedWhether the owner is a company or trust rather than a person.No

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

20100 S River Rd 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 largest lots in Pinal County
  • Older than 94% of homes in Pinal County

How it measures up in Mammoth 85618

The dot is this home. The mark in the middle is the typical home in Mammoth 85618.

Lot size6 ac
SmallerTypical 0.23 acBigger

Bigger than 98% of homes nearby

Year built1971
OlderTypical 1970Newer

Newer than 53% of homes nearby

How 20100 S River Rd ranks against every home in each area.
MeasureThis homeMammoth 85618Pinal County
Lot sizebigger than6 ac98% of homesalmost all homes
Year builtnewer than197153% of homes6% of homes

About 20100 S River Rd

When did 20100 S River Rd, Mammoth, AZ last sell?

20100 S River Rd, Mammoth, AZ last sold on Sep 25, 2013 for $75,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

When was 20100 S River Rd, Mammoth, AZ built?

20100 S River Rd, Mammoth, AZ was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 20100 S River Rd, Mammoth, AZ?

20100 S River Rd, Mammoth, AZ is assigned to San Manuel Jr. High School (middle), rated C-; San Manuel High School (high), rated D; San Manuel Elementary School (elementary), rated C+. All sit in Mammoth-San Manuel Unified District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20100 S River Rd, Mammoth, AZ compare to other homes in Mammoth 85618?

Among the 629 homes in Mammoth 85618, its lot is bigger than 98% of them (6 ac against a typical 0.23 ac) and it is newer than 53% of them (1971 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 20100 S River Rd, Mammoth, AZ?

The 2025 property tax bill for 20100 S River Rd, Mammoth, AZ was $146. The county assessed it at $2,367.

Closest homes

More homes in Mammoth 85618

Assigned schools

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