Orange, CA City Overview, from Its Place in Orange County to What It Means for Mold Remediation at Home
Review these Orange, CA facts before a call about mold remediation in a home here. Orange is a city in central Orange County, about 32 miles southeast of Los Angeles. The 2020 census counted 139,911 residents, and 56.7 percent of occupied homes are owner-occupied. A call from this page reaches an independent local provider through a free referral service.
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What County Is Orange, CA In?
Orange, CA is in Orange County, California. The City of Orange sits in central Orange County, about 32 miles southeast of Los Angeles. The city and the county share the name, and the city sits inside the county.
The City publishes these location facts.
- County
- Orange County, California
- Position
- central Orange County, about 32 miles southeast of Los Angeles
- City government
- general law city, council-manager form
Source: City of Orange, Visitor Information (link), checked 2026-10-15.
Every figure in the card comes from the City of Orange itself. The next measure of the city is its population.
What Is the Population of Orange, California?
Orange, California had 139,911 residents at the April 1, 2020 census, according to the US Census Bureau. The city held 45,329 households in the 2020-2024 survey period, with 2.91 people per household.
Census QuickFacts gives three figures for the city.
| Statistic | Value | Period |
|---|---|---|
| Population, Census | 139,911 | April 1, 2020 |
| Households | 45,329 | 2020-2024 |
| Persons per household | 2.91 | 2020-2024 |
Source: US Census Bureau QuickFacts, Orange city, California (link), checked 2026-10-15.
These counts cover the incorporated city only, not the whole county.
Each of those households follows the same first steps, set out on the guide to mold remediation in Orange, CA.
People per square mile depends on how much land the city covers.
How Big Is the City of Orange, California?
The City of Orange covers 25.67 square miles of land, according to the 2020 Census. That land held 5,450.8 people per square mile in 2020. The City itself gives a land area of 27 square miles and a planning area of 38 square miles. The two land figures differ because the Census and the City measure on different bases and dates.
Source: US Census Bureau QuickFacts, Orange city, California (link); City of Orange, Visitor Information (link), checked 2026-10-15.
Within that area, mail and service coverage run by ZIP code.
What ZIP Codes Does Orange, CA Use?
This referral service takes calls for five Orange, CA ZIP codes, 92865 to 92869. City Hall uses ZIP code 92866, per the City home page.
Calls from this page cover these five ZIP codes.
- 92865
- 92866, including City Hall and the Chapman University area
- 92867
- 92868
- 92869, including El Modena
A home outside them is not covered by calls from this page.
Source: City of Orange home page (link), checked 2026-10-15.
ZIP codes say where a home is, and ownership says who decides about it.
What Share of Homes in Orange, CA Are Owner-Occupied?
56.7 percent of occupied homes in Orange, CA were owner-occupied in the 2020-2024 Census survey period. The median gross rent for renters in the city was $2,327 a month in the same period. Housing age differs across the city, from the 1869 town site to later tracts.
What that age range means is set out under housing age and mold risk in Orange homes.
Source: US Census Bureau QuickFacts, Orange city, California (link); City of Orange, Visitor Information (link), checked 2026-10-15.
Owners next want to know what a home in the city is worth.
What Is the Median Home Value in Orange, CA?
The median value of owner-occupied homes in Orange, CA was $945,800 in the 2020-2024 Census survey period. That figure is a survey median of owner estimates, not a sale price or an appraisal. The homeowners policy and its limits, not the home value, set what a mold claim may pay.
Source: US Census Bureau QuickFacts, Orange city, California (link); California Department of Insurance, Residential Insurance: Homeowners and Renters (link), checked 2026-10-15.
Home value sits beside household income in the Census figures.
What Is the Median Household Income in Orange, CA?
The median household income in Orange, CA was $117,113 in 2024 dollars for 2020-2024, per the US Census Bureau. Half of the households in the city earned more than that figure and half earned less. Income does not change the steps of mold remediation, which stay the same for every household.
Source: US Census Bureau QuickFacts, Orange city, California (link), checked 2026-10-15.
Beyond the numbers, the city is known by its districts and landmarks.
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What Districts and Landmarks Make Up Orange, CA?
Orange, CA has named districts and landmarks, and three anchor this page: the Plaza, El Modena and the Chapman University area. All three have their own history and housing.
Here is each place in one line.
- The Plaza, the landmark at the center of the original 1869 town site.
- El Modena, a named district and home to El Modena High School.
- The Chapman University area, the district around the campus in ZIP 92866.
Each place has its own card below. The Plaza comes first, because the city grew outward from it.
What Is the Plaza in Orange, CA?
The Plaza is the center of the one square mile town site laid out in Orange after 1869. The City calls the Plaza the symbol of the community.
- Laid out
- after 1869, around a forty-acre central town site
- Original town
- one square mile with ten-acre farm lots
- Listing
- the Plaza and most of the original town site are on the National Register of Historic Places
Many homes and buildings on the old town site date from the early days of the City.
Source: City of Orange, Visitor Information (link), checked 2026-10-15.
A second named place, El Modena, is known by its high school.
What Is El Modena in Orange, CA?
El Modena is an area of Orange, CA, in ZIP code 92869. El Modena High School is in that ZIP code, per its home page.
- Named school
- El Modena High School, ZIP 92869
Calls from El Modena homes reach the same referral line as the rest of the city.
Source: El Modena High School home page (link), checked 2026-10-15.
The third place on this page is the area around Chapman University.
Where Is Chapman University in Orange, CA?
Chapman University is a private university in Orange, CA, with the ZIP code 92866. For a rental near campus, the right office for each case is named on city and county offices to contact about mold.
Renters hold 43.3 percent of occupied homes citywide, by the Census owner rate. A tenant with mold in a rented room reports it to the landlord, then to the office that handles housing conditions.
- Campus ZIP
- 92866
Source: Chapman University home page (link); US Census Bureau QuickFacts, Orange city, California (link), checked 2026-10-15.
Beyond single districts, location shapes mold across the whole city.
How Does the Location of Orange, CA Shape Mold in Its Homes?
The location of Orange, CA shapes mold through its weather, its water supply and the age of its homes. Moisture control is the key to mold control in any home, according to EPA. EPA advises keeping indoor humidity below 60 percent, ideally between 30 and 50 percent. The remediation steps are the same in every part of the city, since EPA guidance does not change by district.
Seasonal fog and rain are covered under Orange climate and the marine layer.
Source: EPA, A Brief Guide to Mold, Moisture and Your Home (link), updated 2026-02-18, checked 2026-10-15.
Call to be connected with an independent local provider (000) 000-0000Free referral service; independent contractors. Read the full disclaimer.
What Is the Population Estimate for Orange, CA in 2025?
The US Census Bureau estimated 138,365 residents in Orange city on July 1, 2025.
Source: US Census Bureau QuickFacts, Orange city, California (link), checked 2026-10-15.
The rest of this page gathers the smaller city facts a homeowner may still want.
Call to be connected with an independent local provider (000) 000-0000Free referral service; independent contractors. Read the full disclaimer.