Middletown, California

Middletown is a census-designated place (CDP) in Lake County, California, United States. Its population was 725 at the 2020 census down from 1,323 at the 2010 census, which was up slightly from 1,020 at the 2000 census. Middletown was given its name because it is halfway between Lower Lake and Calistoga, which is 17 mi to the south. The town was severely damaged by the 2015 Valley Fire.

History
At one time, the community was known as Middle Station, and was a halfway point on the stagecoach route over Mt. St. Helena from Calistoga to Lower Lake. The first house was built at the site by J.H. Berry in 1870. The town began in 1871. The Middleton post office opened in 1871 and changed its name to Middletown in 1875. Middletown enjoyed a robust quicksilver (mercury) mining industry through the end of the 19th century. By the early 1900s, cattle and sheep ranching were prominent, along with some limited pear and walnut production. A resort economy sprung up around the various natural springs, and the area around Middletown attracted vacationers from the Bay Area through the 1950s. Many of the resorts closed in the 1960s. In the 1970s and early 1980s, exploitation of nearby geothermal energy resources brought an influx of workers into the local economy. Electrical power plants powered by "steam wells" were built in the mountains above Middletown. As housing prices in the Bay Area increased in the late 20th century, Middletown and nearby Hidden Valley Lake enjoyed a population boom as commuters moved to the Middletown area looking for affordable housing. Nearby tourism includes Harbin Hot Springs and the Twin Pine Casino located on the local Rancheria south of the town. A large resort, 2 miles southeast of town, was proposed in 2020, consisting of low-density residential development, preserved open space, retail space, restaurants, and several boutique hotels.

2015 Valley Fire
In the late afternoon and early evening hours of September 12, 2015, about half the town, including city blocks, commercial buildings and an apartment complex, was destroyed by the fast-moving Valley Fire. The town was directly in the path of the advancing fire, and suffered a "devastating blow".

2019 Kincade Fire
The 2019 Kincade Fire started in Sonoma County and at some point prompted mandatory evacuations in Lake County.

Geography
Middletown has an elevation of 1,099 feet (335 m). According to the United States Census Bureau, the CDP has a total area of 1.8 sqmi, all of it land.

Climate
This region experiences hot and dry summers, with average summer monthly temperatures above 97 F. According to the Köppen Climate Classification system, Middletown has a warm-summer Mediterranean climate, abbreviated Csb on climate maps.

2010
At the 2010 census Middletown had a population of 1,323. The population density was 717.4 PD/sqmi. The racial makeup of Middletown was 985 (74.5%) White, 5 (0.4%) African American, 28 (2.1%) Native American, 18 (1.4%) Asian, 0 (0.0%) Pacific Islander, 225 (17.0%) from other races, and 62 (4.7%) from two or more races. Hispanic or Latino of any race were 413 people (31.2%).

The census reported that 1,317 people (99.5% of the population) lived in households, 6 (0.5%) lived in non-institutionalized group quarters, and no one was institutionalized.

There were 508 households; 189 (37.2%) had children under the age of 18 living in them, 223 (43.9%) were opposite-sex married couples living together, 72 (14.2%) had a female householder with no husband present, 41 (8.1%) had a male householder with no wife present. There were 36 (7.1%) unmarried opposite-sex partnerships, and 4 (0.8%) same-sex married couples or partnerships. 140 households (27.6%) consisted of a single person and 52 (10.2%) had someone living alone who was 65 or older. The average household size was 2.59. There were 336 families (66.1% of households); the average family size was 3.15.

The age distribution was 376 people (28.4%) under the age of 18, 114 people (8.6%) aged 18 to 24, 309 people (23.4%) aged 25 to 44, 374 people (28.3%) aged 45 to 64, and 150 people (11.3%) who were 65 or older. The median age was 37.4 years. For every 100 females, there were 102.9 males. For every 100 females age 18 and over, there were 103.2 males.

There were 557 housing units at an average density of 302.0 per square mile; of the occupied units, 251 (49.4%) were owner-occupied and 257 (50.6%) were rented. The homeowner vacancy rate was 3.8% and the rental vacancy rate was 4.1%. 659 people (49.8% of the population) lived in owner-occupied housing units and 658 people (49.7%) lived in rental housing units.

2000
At the 2000 census there were 1,020 people, 392 households, and 263 families in the CDP. The population density was 395.6 PD/sqmi. There were 427 housing units at an average density of 165.6 /sqmi. The racial makeup of the CDP was 83.73% White, 0.39% African American, 1.86% Native American, 1.67% Asian, 0.69% Pacific Islander, 8.24% from other races, and 3.43% from two or more races. Hispanic or Latino of any race were 22.84%.

Of the 392 households 32.9% had children under the age of 18 living with them, 47.4% were married couples living together, 12.0% had a female householder with no husband present, and 32.7% were non-families. 24.0% of households were one person and 10.2% were one person aged 65 or older. The average household size was 2.56 and the average family size was 3.05.

The age distribution was 26.6% under the age of 18, 7.5% from 18 to 24, 26.9% from 25 to 44, 23.9% from 45 to 64, and 15.2% 65 or older. The median age was 38 years. For every 100 females, there were 110.3 males. For every 100 females age 18 and over, there were 105.2 males.

The median household income was $35,278 and the median family income was $38,571. Males had a median income of $33,214 versus $26,515 for females. The per capita income for the CDP was $14,135. About 21.2% of families and 20.9% of the population were below the poverty line, including 22.1% of those under age 18 and 28.3% of those age 65 or over.

Education
Middletown Unified School District serves as the Middletown and Hidden Valley Lake area's school district. Middletown High School and Middletown Middle School share a campus. Middletown Adventist School is a Christian elementary school also in the area.

Tourist attractions
Harbin Hot Springs, a New Age retreat center with spring pools, conference facilities, daily activities and classes, is located northwest of town. The Hot Springs were decimated by the 2015 California wildfires.

The Middletown Rancheria, an Indian reservation of Pomo, Lake Miwok, Wappo, and Wintu, is located just south of town and is home to a tribal casino as well as a tribal gas station which brings in people from around the area for its low prices.

Government
In the California State Legislature, Middletown is in, and in.

In the United States House of Representatives, Middletown is in.

Lake County is divided into five supervisorial districts, and Middletown is in District 1. As of January 2017, Jose "Moke" Simon is the supervisor for District 1.