|Riverside County and the state of California|
|- City||14.4 sq mi (37.2 km²)|
|- Land||14.1 sq mi (36.5 km²)|
|- Water||0.3 sq mi (0.7 km²)|
|- Density||1,677.6/sq mi (649.4/km²)|
Norco is located at GR1.(33.927124, -117.561326)
As of the censusGR2 of 2000, there were 24,157 people, 6,136 households, and 4,945 families residing in the city. The population density was 662.0/km² (1,714.8/mi²). There were 6,277 housing units at an average density of 172.0/km² (445.6/mi²). The racial makeup of the city was 82.44% White, 6.13% African American, 0.75% Native American, 1.16% Asian, 0.14% Pacific Islander, 6.37% from other races, and 3.01% from two or more races. Hispanic or Latino of any race were 22.78% of the population.
There were 6,136 households out of which 37.7% had children under the age of 18 living with them, 64.7% were married couples living together, 10.4% had a female householder with no husband present, and 19.4% were non-families. 13.7% of all households were made up of individuals and 4.5% had someone living alone who was 65 years of age or older. The average household size was 3.15 and the average family size was 3.43.
In the city the population was spread out with 22.4% under the age of 18, 8.8% from 18 to 24, 37.7% from 25 to 44, 24.5% from 45 to 64, and 6.6% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 128.4 males. For every 100 females age 18 and over, there were 137.6 males.
The median income for a household in the city was $62,652, and the median income for a family was $66,204. Males had a median income of $41,599 versus $30,652 for females. The per capita income for the city was $20,710. About 3.3% of families and 5.3% of the population were below the poverty line, including 3.9% of those under age 18 and 2.2% of those age 65 or over.
Being a horse community that it is, there are no sidewalks in the city of Norco, instead there are horse trails. There are many associations that are a part of the city, some are: The Norco Horsemen's Association and The Norco Junior Horsemen's Association. Politics in Norco also are dominated by concerns about horses and animal-keeping vs. suburbanization, a battle that has played out over development in the Norco Hills. In that area, which borders eastern Corona and Riverside, an influx of Orange County commuters is buying homes for $500,000 and up that have few provisions for animal-keeping—an affront to longtime residents who believe their town's character is in jeopardy.
See Norco shootout
On Thursday April 19, 2007, at the American Repertory Theatre in Cambridge, Massachusetts while in the area for a singing festival, about 87 Norco High School students, prompted by a chaperone, disrupted the one-man performance by Mike Daisey called Invincible Summer by walking out of the monologue about ten minutes into the performance, apparently after Daisey used profanity. The chaperone is seen on video posted on YouTube approaching Daisey during the disruptive walk-out and dousing the monologue notes with water. Although destruction of property and disturbing the peace are both crimes in the Commonwealth of Massachusetts, no arrests have been made in the water-dousing incident. Norco High School principal John Johnson publicly apologized for the chaperone's illegal behavior conducted in the presence of students after he is said to have received dozens of emails and telephone calls from media and others wanting information and an explanation about what occurred at the A.R.T. ,