Озеро Эрроухед: демография и история (Ozero Errouhed: demografiya i istoriya)

The University of California, Los Angeles operates the nearby UCLA Conference Center, a full service conference facility with lodging and meeting space. Other major employers include Mountains Community Hospital and Rim of the World Unified School District. Logging in the San Bernardino Mountains was once done on a large scale, with the Brookings Lumber Company operation one of the largest. It operated on between Fredalba and Hunsaker Flats (present day Running Springs), between 1899 and 1912. It built a logging railroad to bring logs to the mill at Fredalba. The Shay locomotives had to be disassembled and hauled by wagon up the mountain, since the railroad operated in the high country but did not connect to other railroads in lowlands. Finished lumber was hauled by wagon down the steep grades to the Molino Box Factory in Highland, California.

At the 2010 census Lake Arrowhead had a population of 12,424. The population density was The racial makeup of Lake Arrowhead was 10,729 (86.4%) White (73.0% Non Hispanic White), 95 (0.8%) African American, 93 (0.7%) Native American, 152 (1.2%) Asian, 33 (0.3%) Pacific Islander, 847 (6.8%) from other races, and 475 (3.8%) from two or more races. Hispanic or Latino of any race were 2,709 persons (21.8%). The census reported that 12,389 people (99.7% of the population) lived in households, 16 (0.1%) lived in non institutionalized group quarters, and 19 (0.2%) were institutionalized. There were 4,672 households, 1,563 (33.5%) had children under the age of 18 living in them, 2,746 (58.8%) were opposite sex married couples living together, 413 (8.8%) had a female householder with no husband present, 258 (5.5%) had a male householder with no wife present. There were 217 (4.6%) unmarried opposite sex partnerships, and 64 (1.4%) same sex married couples or partnerships. 984 households (21.1%) were one person and 358 (7.7%) had someone living alone who was 65 or older. The average household size was 2.65. There were 3,417 families (73.1% of households); the average family size was 3.07. The age distribution was 3,043 people (24.5%) under the age of 18, 968 people (7.8%) aged 18 to 24, 2,571 people (20.7%) aged 25 to 44, 4,104 people (33.0%) aged 45 to 64, and 1,738 people (14.0%) who were 65 or older. The median age was 43.0 years. For every 100 females, there were 103.8 males. For every 100 females age 18 and over, there were 103.4 males. There were 11,875 housing units at an average density of 626.6 per square mile, of the occupied units 3,428 (73.4%) were owner occupied and 1,244 (26.6%) were rented. The homeowner vacancy rate was 7.9%; the rental vacancy rate was 12.4%. 8,647 people (69.6% of the population) lived in owner occupied housing units and 3,742 people (30.1%) lived in rental housing units. According to the 2010 United States Census, Lake Arrowhead had a median household income of $57,672, with 11.2% of the population living below the federal poverty line. There were 3,243 households, of which 37.3% had children under the age of 18 living with them, 62.6% were married couples living together, 8.9% had a female householder with no husband present, and 24.6% were non families. Of all households 18.7% were one person and 6.0% were one person aged 65 or older. The average household size was 2.8 and the average family size was 3.2. The age distribution was 28.9% under the age of 18, 6.5% from 18 to 24, 24.5% from 25 to 44, 28.8% from 45 to 64, and 11.2% 65 or older. The median age was 39 years. For every 100 females, there were 100.8 males. For every 100 females age 18 and over, there were 100.0 males. The median household income was $60,826 and the median family income was $65,183. Males had a median income of $50,016 versus $35,526 for females. The per capita income for the CDP was $28,176. About 7.3% of families and 9.1% of the population were below the poverty line, including 10.5% of those under age 18 and 6.2% of those age 65 or over.

In the California State Legislature, Lake Arrowhead is in , and in
In the United States House of Representatives, Lake Arrowhead is in In the Senate, California is represented by Alex Padilla (D) and Laphonza Butler (D).

The Lake Arrowhead Community has a unique climate for Southern California with four distinct seasons which support an array of outdoor recreational activity and year round beauty. Lake Arrowhead has a Warm summer Mediterranean climate (Köppen climate classification Csb). During the summer, warm temperatures and monsoon thunderstorms are common. During the winter months, large pacific storms bring plenty of snow. The area receives about 300 annual days of sunshine per year. Beginning in late 2011, a catastrophic drought began affecting Lake Arrowhead along with the rest of California. By November 2016, the lake level dropped 11.975 feet (4 m). This drop exposed much of the lake floor and beached most of the docks. As of February 2019, the lake has rebounded to just 2 feet (1 m) below the historical average.

Heavy snow and winds have caused major power outages in the area. A storm in the last week of December 2021 left many homes without power for a week. Similarly on Thanksgiving weekend 2019, homes were without power for up to four days.