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  4. Three Rocks, California

Three Rocks, California

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Population in 2010: 246.
Males: 108  (44.0%)
Females: 138  (56.0%)
Median resident age:

57.0 years
California median age:

37.9 years
Estimated median household income in 2022: $69,571
Three Rocks:

$69,571
CA:

$91,551

Estimated per capita income in 2022: $31,410

Three Rocks CDP income, earnings, and wages data

Estimated median house or condo value in 2022: $382,500
Three Rocks:

$382,500
CA:

$715,900

Mean prices in 2022: all housing units: $157,730; detached houses: $158,438
March 2022 cost of living index in Three Rocks: 92.8 (less than average, U.S. average is 100)
Percentage of residents living in poverty in 2022: 18.8%

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Current Local Time: PST time zone

Elevation: 420 feet

107 residents are foreign born (59.3% Latin America).

This place:

58.8%
California:

26.5%

Nearest city with pop. 50,000+: Fresno, CA (38.4 miles , pop. 427,652).

Nearest city with pop. 1,000,000+: Los Angeles, CA (202.1 miles , pop. 3,694,820).

Nearest cities:

Cantua Creek, CA (2.0 miles ),
Tranquillity, CA (3.6 miles ),
San Joaquin, CA (3.6 miles ),
Mendota, CA (4.2 miles ),
Kerman, CA (4.9 miles ),
Firebaugh, CA (5.0 miles ),
Coalinga, CA (5.0 miles ),
Lanare, CA (5.1 miles )

Latitude: 36.50 N, Longitude: 120.39 W

Area code commonly used in this area: 559

Distribution of median household income in Three Rocks, CA in 2022
Distribution of house value in Three Rocks, CA in 2022
Unemployment in December 2023:
Here:

8.2%
California:

5.1%
Air pollution and air quality trends
(lower is better)
AQI CO Ozone PM2.5
Air Quality Index

Air Quality Index (AQI) level in 2022 was 65.4. This is about average.

City:

65.4
U.S.:

72.6
Carbon Monoxide Level

Carbon Monoxide (CO) [ppm] level in 2018 was 0.159. This is significantly better than average. Closest monitor was 9.1 miles away from the city center.

City:

0.159
U.S.:

0.251
Ozone Level

Ozone [ppb] level in 2022 was 27.1. This is better than average. Closest monitor was 9.1 miles away from the city center.

City:

27.1
U.S.:

33.3
Particulate Matter Level

Particulate Matter (PM2.5) [µg/m3] level in 2022 was 6.79. This is about average. Closest monitor was 9.1 miles away from the city center.

City:

6.79
U.S.:

8.11

Earthquake activity:

Three Rocks-area historical earthquake activity is significantly above California state average. It is 8288% greater than the overall U.S. average.

On 4/18/1906 at 13:12:21, a magnitude 7.9 (7.9 UK, Class: Major, Intensity: VIII - XII) earthquake occurred 177.1 miles away from Three Rocks center, causing $524,000,000 total damage
On 7/21/1952 at 11:52:14, a magnitude 7.7 (7.7 UK) earthquake occurred 130.0 miles away from Three Rocks center, causing $50,000,000 total damage
On 11/4/1927 at 13:51:53, a magnitude 7.5 (7.5 UK) earthquake occurred 115.5 miles away from the city center
On 10/18/1989 at 00:04:15, a magnitude 7.1 (6.5 MB, 7.1 MS, 6.9 MW, 7.0 ML) earthquake occurred 87.2 miles away from Three Rocks center, causing 62 deaths (62 shaking deaths) and 3757 injuries, causing $1,305,032,704 total damage
On 5/2/1983 at 23:42:37, a magnitude 6.7 (6.2 MB, 6.5 MS, 6.5 MW, 6.7 ML, Class: Strong, Intensity: VII - IX) earthquake occurred 20.3 miles away from the city center, causing $31,000,000 total damage
On 6/28/1992 at 11:57:34, a magnitude 7.6 (6.2 MB, 7.6 MS, 7.3 MW, Depth: 0.7 mi) earthquake occurred 270.3 miles away from the city center, causing 3 deaths (1 shaking deaths, 2 other deaths) and 400 injuries, causing $100,000,000 total damage and $40,000,000 insured losses
Magnitude types: body-wave magnitude (MB), local magnitude (ML), surface-wave magnitude (MS), moment magnitude (MW)

Natural disasters:

The number of natural disasters in Fresno County (12) is smaller than the US average (15).
Major Disasters (Presidential) Declared: 8
Emergencies Declared: 2

Causes of natural disasters: Floods: 6, Storms: 4, Winter Storms: 3, Freezes: 2, Landslides: 2, Drought: 1, Fire: 1, Hurricane: 1, Other: 1 (Note: some incidents may be assigned to more than one category).

Colleges/universities with over 2000 students nearest to Three Rocks:

  • West Hills College-Lemoore (about 35 miles; Lemoore, CA; Full-time enrollment: 2,314)
  • Fresno City College (about 38 miles; Fresno, CA; FT enrollment: 12,994)
  • Fresno Pacific University (about 40 miles; Fresno, CA; FT enrollment: 3,083)
  • Heald College-Fresno (about 40 miles; Fresno, CA; FT enrollment: 2,199)
  • University of Phoenix-Central Valley Campus (about 42 miles; Fresno, CA; FT enrollment: 2,109)
  • California State University-Fresno (about 42 miles; Fresno, CA; FT enrollment: 18,993)
  • Institute of Technology Inc (about 44 miles; Clovis, CA; FT enrollment: 2,483)

Points of interest:

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Fresno County has a predicted average indoor radon screening level between 2 and 4 pCi/L (pico curies per liter) - Moderate Potential
Average household size:
This place:

4.5 people
California:

2.9 people

Percentage of family households:
This place:

81.8%
Whole state:

68.7%

Percentage of households with unmarried partners:
This place:

5.5%
Whole state:

7.2%


No gay or lesbian households reported

For population 15 years and over in Three Rocks:

Marital status in Three Rocks, CA
  • Never married: 37.7%
  • Now married: 27.9%
  • Separated: 0.0%
  • Widowed: 24.2%
  • Divorced: 10.2%

For population 25 years and over in Three Rocks:

  • High school or higher: 48.1%
  • Bachelor's degree or higher: 3.2%
  • Graduate or professional degree: 3.2%
Educational Attainment in 2022
School Enrollment by Level of School in 2022
Education Gini index (Inequality in education)
Here:

43.5
California average:

15.5

Presidential Elections Results

Graphs represent county-level data. Detailed 2008 Election Results

Religion statistics for Three Rocks, CA (based on Fresno County data)

Religions Adherents in 2010
Religions Adherents - Change between 2000 and 2010
ReligionAdherentsCongregations
Catholic288,32443
Evangelical Protestant126,004463
Other37,97795
Mainline Protestant16,84370
Orthodox7,7689
Black Protestant4,16021
None449,374-
Source: Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E.Jones, Alexei Krindatch, Richie Stanley and Richard H.Taylor. 2012. 2010 U.S.Religion Census: Religious Congregations & Membership Study. Association of Statisticians of American Religious Bodies. Jones, Dale E., et al. 2002. Congregations and Membership in the United States 2000. Nashville, TN: Glenmary Research Center. Graphs represent county-level data

Food Environment Statistics:

Number of grocery stores: 215
This county:

2.40 / 10,000 pop.
California:

2.14 / 10,000 pop.
Number of supercenters and club stores: 4
This county:

0.04 / 10,000 pop.
California:

0.04 / 10,000 pop.
Number of convenience stores (no gas): 108
This county:

1.21 / 10,000 pop.
California:

0.62 / 10,000 pop.
Number of convenience stores (with gas): 190
Fresno County:

2.12 / 10,000 pop.
California:

1.49 / 10,000 pop.
Number of full-service restaurants: 516
This county:

5.77 / 10,000 pop.
State:

7.42 / 10,000 pop.
Adult diabetes rate:
This county:

7.6%
California:

7.3%
Adult obesity rate:
Fresno County:

26.4%
California:

21.3%
Low-income preschool obesity rate:
This county:

17.5%
State:

17.9%

3.57% of this county's 2021 resident taxpayers lived in other counties in 2020 ($51,894 average adjusted gross income)

Here:

3.57%
California average:

5.19%

0.01% of residents moved from foreign countries ($87 average AGI)
Fresno County:

0.01%
California average:

0.03%

Top counties from which taxpayers relocated into this county between 2020 and 2021:
from Madera County, CA  0.31% ($49,778 average AGI)
from Tulare County, CA  0.30% ($54,209)
from Los Angeles County, CA  0.27% ($52,546)


3.88% of this county's 2020 resident taxpayers moved to other counties in 2021 ($61,665 average adjusted gross income)

Here:

3.88%
California average:

6.14%

0.01% of residents moved to foreign countries ($93 average AGI)
Fresno County:

0.01%
California average:

0.02%

Top counties to which taxpayers relocated from this county between 2020 and 2021:
to Madera County, CA  0.44% ($67,197 average AGI)
to Tulare County, CA  0.34% ($48,048)
to Los Angeles County, CA  0.18% ($49,584)

Strongest AM radio stations in Three Rocks:

  • KMJ (580 AM; 50 kW; FRESNO, CA; Owner: INFINITY RADIO OPERATIONS INC.)
  • KWRU (940 AM; 50 kW; FRESNO, CA)
  • KCBC (770 AM; 50 kW; RIVERBANK, CA; Owner: KIERTRON, INC.)
  • KXEX (1550 AM; 10 kW; FRESNO, CA; Owner: RAK COMMUNICATIONS, INC.)
  • KAVT (1680 AM; 10 kW; FRESNO, CA; Owner: RAK COMMUNICATIONS, INC.)
  • KOOR (790 AM; 10 kW; CLOVIS, CA; Owner: INFINITY RADIO OPERATIONS INC.)
  • KIRV (1510 AM; daytime; 10 kW; FRESNO, CA; Owner: GORE-OVERGAARD BROADCASTING, INC)
  • KGDP (660 AM; 50 kW; ORCUTT, CA; Owner: RADIO REPRESENTATIVES, INC.)
  • KERI (1180 AM; 50 kW; WASCO-GREENACRES, CA; Owner: KWSO, INC.)
  • KMBX (700 AM; 10 kW; SOLEDAD, CA; Owner: ENTRAVISION HOLDINGS, LLC)
  • KYAA (1200 AM; 25 kW; SOQUEL, CA; Owner: PEOPLE'S RADIO, INC.)
  • KLOK (1170 AM; 50 kW; SAN JOSE, CA; Owner: ENTRAVISION HOLDINGS, LLC)
  • KNBR (680 AM; 50 kW; SAN FRANCISCO, CA; Owner: KNBR LICO, INC.)

Strongest FM radio stations in Three Rocks:

  • K217EQ (91.3 FM; COALINGA, CA; Owner: CALVARY CHAPEL OF TWIN FALLS, INC.)
  • K203AQ (88.5 FM; HELM, ETC., CA; Owner: FAMILY STATIONS, INC.)
  • KDKL (88.3 FM; COALINGA, CA; Owner: EDUCATIONAL MEDIA FOUNDATION)
  • KWOL (105.5 FM; SAN JOAQUIN, CA; Owner: MESOSPHERE BROADCASTING LIMITED PARTNERSHIP)
  • K211DG (90.1 FM; FIREBAUGH, CA; Owner: CALVARY CHAPEL OF TWIN FALLS, INC.)
  • KHTN (104.7 FM; LOS BANOS, CA; Owner: BUCKLEY COMMUNICATIONS, INC.)
  • KMGV (97.9 FM; FRESNO, CA; Owner: INFINITY RADIO OPERATIONS INC.)
  • KRKC-FM (102.1 FM; KING CITY, CA; Owner: KING CITY COMMUNICATIONS CORPORATION)
  • KBDH (91.7 FM; SAN ARDO, CA; Owner: PATAPHYSICAL BROADCASTING FOUNDATION)
  • KDON-FM (102.5 FM; SALINAS, CA; Owner: CLEAR CHANNEL BROADCASTING LICENSES, INC.)
  • K206CC (89.1 FM; LOCKWOOD, CA; Owner: PRUNEDALE EDUC. F'DATION/CENTRAL CA)
  • K202DU (88.3 FM; SAN JUAN BAUTISTA, CA; Owner: CALVARY CHAPEL OF TWIN FALLS, INC.)
  • K260AA (99.9 FM; CARMEL VALLEY, CA; Owner: ENTRAVISION HOLDINGS, LLC)
  • KBTU (93.5 FM; HOLLISTER, CA; Owner: MAPLETON COMMUNICATIONS, L.L.C.)
  • KMAK (100.3 FM; ORANGE COVE, CA; Owner: RICHARD B. SMITH)
  • KUSP (88.9 FM; SANTA CRUZ, CA; Owner: PATAPHYSICAL B/CING. FOUNDATION,INC.)
  • KWAV (96.9 FM; MONTEREY, CA; Owner: BUCKLEY BROADCASTING OF MONTEREY)
  • KTOM-FM (100.7 FM; SALINAS, CA; Owner: CLEAR CHANNEL BROADCASTING LICENSES, INC.)
  • K203CM (88.5 FM; SANGER, CA; Owner: EDUCATIONAL MEDIA FOUNDATION)
  • KLVM (89.7 FM; PRUNEDALE, CA; Owner: PRUNEDALE EDUCATIONAL ASSOCIATION)

TV broadcast stations around Three Rocks:

  • KGMC-LP (Channel 22; FRESNO, CA; Owner: GARY M. COCOLA FAMILY TRUST, GARY M. COCOLA TRUSTEE)
  • KJKZ-LP (Channel 27; COALINGA, CA; Owner: GARY M. COCOLA FAMILY TRUST, GARY M. COCOLA TRUSTEE)
  • National Bridge Inventory (NBI) Statistics
  • 5Number of bridges
  • 66ft / 20.4mTotal length
  • 65,700Total average daily traffic
  • 19,506Total average daily truck traffic
  • 93,943Total future (year 2043) average daily traffic

FCC Registered Cell Phone Towers:

1
  • 4149 West Elkhorn Avenue (Lat: 36.486278 Lon: -120.414000), Type: Mast, Structure height: 86 m, Overall height: 90.2 m, Call Sign: KNKA366
    Assigned Frequencies: 869.040 MHz, 869.040 MHz, 869.040 MHz, 824.040 MHz, 824.040 MHz, 824.040 MHz, 890.010 MHz, 890.010 MHz, 890.010 MHz, 845.010 MHz, 845.010 MHz, 845.010 MHzGrant Date: 08/29/2017, Expiration Date: 10/01/2027, Certifier: Michael P GogginRegistrant: At&t Services, Inc., 208 S Akard St, 20f, Dallas, TX 75202, Phone: (855) 699-7073, Fax: (214) 746-6410, Email:


FCC Registered Broadcast Land Mobile Towers:

1
  • 13-4, 2.1 Km Nw Of Intersection Of W. Kamm Ave. & S. Derrick Ave. (Lat: 36.543444 Lon: -120.406778), Type: Pole, Structure height: 12.2 m, Overall height: 15.2 m, Call Sign: WQTZ621,
    Assigned Frequencies: 159.900 MHz, Grant Date: 05/13/2014, Expiration Date: 05/13/2024, Cancellation Date: 07/24/2020, Certifier: Clay Beck, Registrant: Federal Licensing Inc, 1588 Fairfield Road, Gettysburg, PA 17325, Phone: (717) 334-9262, Fax: (717) 334-6440, Email:


FCC Registered Microwave Towers:

1
  • VOM, 35507 West Kamm Avenue (Lat: 36.531083 Lon: -120.435278), Type: Building, Structure height: 5.5 m, Overall height: 11.6 m, Call Sign: WRYB921,
    Assigned Frequencies: 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, 11285.0 MHz, Grant Date: 07/21/2023, Expiration Date: 07/21/2033, Certifier: Peter L Sorensen, Registrant: Micronet Communications, Inc., 812 Lexington Dr, Plano, TX 75075, Phone: (972) 422-7200, Email:


Houses and condos Apartments
Most commonly used house heating fuel in houses and condos in Three Rocks, CA
  • 68.1%Electricity
  • 31.9%Utility gas
Most commonly used house heating fuel in apartments in Three Rocks, CA
  • 68.8%Bottled, tank, or LP gas
  • 31.2%Electricity


Three Rocks compared to California state average:

  • Median house value significantly below state average.
  • Unemployed percentage significantly below state average.
  • Black race population percentage significantly below state average.
  • Hispanic race population percentage above state average.
  • Foreign-born population percentage above state average.
  • Length of stay since moving in significantly above state average.
  • Number of college students significantly below state average.
  • Percentage of population with a bachelor's degree or higher significantly below state average.

Three Rocks on our top lists:

  • #30 on the list of "Top 100 cities with highest percentage of foreign-born residents"
  • #5 on the list of "Top 101 counties with the highest Particulate Matter (PM2.5) Annual air pollution readings in 2012 (µg/m3)"
  • #11 on the list of "Top 101 counties with the highest ground withdrawal of fresh water for public supply"
  • #15 on the list of "Top 101 counties with the highest lead air pollution readings in 2012 (µg/m3)"
  • #15 on the list of "Top 101 counties with the lowest lead air pollution readings in 2012 (µg/m3)"
  • #15 on the list of "Top 101 counties with the highest Particulate Matter (PM10) Annual air pollution readings in 2012 (µg/m3)"
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