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Interlaken, CA vs South Monrovia Island, CA

Interlaken

California

vs

South Monrovia Island

California

Across 33 directional measures we can compare, Interlaken leads on 18 and South Monrovia Island on 15. Counting measures is not an overall verdict: their importance depends on your priorities. Median rent is 7% higher in Interlaken, and so is median household income.

Median gross rent
$1,941$1,814
Interlaken is 7% higher
Median household income
$109,150$104,444
Interlaken is 5% higher
Median home value
$831,000$680,900
Interlaken is 22% higher

The Citytistics read

  • After the median rent, with other prices set to the US average, the median household has about $86,900 a year left in Interlaken and $81,100 in South Monrovia Island. Money goes further in Interlaken, by about $5,800 a year.
  • A household earning Interlaken's median of $109,150 would need about $110,500 in South Monrovia Island to keep the same money after rent and local prices.
  • Between the 2019 and 2024 surveys, pay outran rent by 5.1 points a year in Interlaken, and pay outran rent by 6.2 points a year in South Monrovia Island.

How these are calculated

CaliforniaSouth Monrovia Island, CAInterlaken, CAInterlakenSouth Monrovia IslandInterlakenSouth Monrovia Island

Which fits you?

Both start on the Citytistics Index (CTX). Move the sliders to weigh what matters to you and the score becomes your own mix.

Your weights

Top 2 of 2 matching places. Places in the top 1% show their national rank.

#PlaceCTXAffordabilityEconomyEducationSafetyCommuteAmenitiesGrowth
01Interlaken, CAComposite 34.4 / 100
13
255211n/a4731n/a
02South Monrovia Island, CAComposite 33.4 / 100
12
294635n/a4713n/a

CTX is the Citytistics Index: better than that share of the places we rate. It tops out at 99, so the top 1% show their national rank (#1 is best). Change any weight to rank on your own mix. How the CTX is built

Every measure

The dots show where each place sits among the 6,645 places we track. The bar is the median. A small dot after a value marks the better one.

MeasureInterlakenSouth Monrovia IslandAmong all places
Cost of living
Median gross rent1$1,941$1,814
Rent to income121.3%20.8%
Property tax rate10.6%0.6%
Home price to income17.6x6.5x
Prices vs US average2109.9113.6
Fair market rent, 2 bedrooms3$4,254$2,964
HUD area median income4$137,200$108,100
Housing
Property tax paid (median)1$4,885$3,947
Median home value1$831,000$680,900
Home prices, 1-year change50.3%1.7%
Home prices, 5-year change530.1%43.3%
Homeownership166.5%66.2%
Renters paying 30%+159.8%20.7%
Owner costs with a mortgage1$2,819$2,331
Vacant homes19.4%0.0%
Median year built119701953
Jobs and income
Median household income1$109,150$104,444
Income per person1$30,688$27,603
Unemployment16.1%6.9%
Average annual pay6$70,123$86,080
Pay growth, 1 year63.7%3.0%
Jobs6104,4384,525,460
Poverty rate114.9%7.2%
Mean commute126 min26 min
Works from home112.9%7.5%
Commutes by transit11.9%2.1%
People
Population18,0686,830
Median age134.333.8
Bachelor's or higher116.1%25.2%
High school or higher172.1%73.4%
Household size14.04.1
Born abroad132.1%27.3%
No health insurance17.5%7.2%
Homes with broadband197.0%92.3%
Moving
Moved here in the past year17.7%2.7%
Moved from another state11.2%0.0%
Net movers per 1,000 people7-9.8-11.4
Income of households moving in7$113,571$89,350
Income of households moving out7$93,789$94,071
Local life
Restaurants and bars per 10k823.824.2
Shops per 10k830.529.6
Arts, recreation and fitness per 10k85.921.8
Doctors' offices and clinics per 10k823.631.4
Child care centers per 10k84.92.0
Parks per 10k911.22.9
Playgrounds per 10k95.02.9
Grocery stores per 10k92.50.0
Restaurants, cafes and bars per 10k90.00.0
Libraries per 10k90.00.0
Named paths and bike trails90.00.0
Transit stops per sq mi93.21.8
Nearest National Park Service site1043.734.8
National Park Service sites within 60 miles1021
National Register listings1146629
Schools
Public schools12822,197
Public school students1236,3101,262,149
Students per teacher1221.521.5
Climate
July average high1377°F89°F
January average low1341°F41°F
Average temperature1358°F62°F
Annual precipitation1333.6 in15.1 in
Hazards and air
Natural hazard risk1497.8100.0
Hurricane risk14n/a0.0
Tornado risk1418.797.7
Wildfire risk1497.399.9
Heat wave risk1486.699.3
Median air quality index153574
Good air days1587.7%10.7%

Data bundle checked 2026-11-14; individual source vintages vary. Rent needed at the 30% line: Interlaken $77,640, South Monrovia Island $72,560 a year.

Sources and methods

The small numbers beside each measure point here. Links go to the publisher.

  1. American Community Survey 5-year estimates · US Census Bureau · 2020 to 2024 estimatesTables B01002, B01003, B05002, B07003, B08013, B08301, B15003, B17001, B19013, B19301, B23025, B25002, B25003, B25010, B25035, B25064, B25070, B25077, B25088, B25103, B28002, S2701
  2. Regional Price Parities · US Bureau of Economic Analysis · Latest release, retrieved 2026-11-14
  3. Fair Market Rents · US Department of Housing and Urban Development · Fiscal year 2027
  4. Income Limits · US Department of Housing and Urban Development · Fiscal year 2026
  5. House Price Index · Federal Housing Finance Agency · Latest release, retrieved 2026-11-14
  6. Quarterly Census of Employment and Wages · US Bureau of Labor Statistics · 2025 annual averages
  7. SOI Tax Stats, county-to-county migration · Internal Revenue Service · Tax years 2022 to 2023Counts tax returns and the people on them; flows under 20 returns are suppressed.
  8. County Business Patterns · US Census Bureau · 2023 data
  9. OpenStreetMap · © OpenStreetMap contributors, available under the Open Database License (ODbL) · Map data as of 2026-11
  10. National Park Service sites · Wikidata (CC0), units operated by the National Park Service · Retrieved 2026-11
  11. National Register of Historic Places · National Park Service · Listings through 2026-05-22
  12. Common Core of Data · National Center for Education Statistics · 2024 release
  13. 1991-2020 climate normals · NOAA National Centers for Environmental Information · Series updated 2026-11-05Averages for 1991 to 2020 computed from NOAA's county climate series (nClimDiv).nClimDiv county series
  14. National Risk Index · Federal Emergency Management Agency · Latest release, retrieved 2026-11-14NRI data and maps
  15. Air Quality System, annual AQI by county · US Environmental Protection Agency · 2025 dataAirData download files

Derived by Citytistics from the tables above: rent to income (B25064, B19013); property tax rate (B25103, B25077); home price to income (B25077, B19013).

Survey figures are estimates with margins of error. Formulas and definitions: methodology.

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