Technology and finance, two of the biggest engines of the American economy, have provided the financial wherewithal for people to construct mega homes in the U.S.
To identify the American places with the most mega homes, 24/7 Wall St. used Census Bureau data to rank the highly affluent places — with a median home value of more than $2 million, the maximum measured by the census — by the share of owner-occupied homes that have nine or more rooms.
Using census data for the ultra wealthy has its limitations as the census has upper limits of measurements. For example, the census only counts up to 10 rooms, lumping houses with more rooms in the 10 rooms category. Similarly, home values top out at $2,000,001 and median annual household income at $250,000, with anything above these two values grouped in these categories.
Of the 35 places listed with the most mega homes, 21 are in California. Many are in Silicon Valley, the tech hub that has supercharged the California economy, or in Los Angeles County, where the entertainment industry stokes the economy. Six places are on Long Island, where many Wall Streeters retreat to during the summer or the weekends. (Also see American cities with the most million dollar homes.)
Four places on Long Island are in the top 10 of places where the largest share of owner-occupied homes have nine or more rooms. California has three in the top 10. Census data for the number of rooms appears to top out at 10, so it is likely many homes in these areas have far more than 10 rooms. (At the other end of the spectrum, this is the state with the most homeless people.)
The 10 places on this list with the highest percentage of homes worth $2 million or more are all California locales, including Los Altos Hills, California, where nearly 94% of homes are worth more than $2 million. The places on this list are among the most affluent in the country — 19 have a median income of at least $250,000. Median income for U.S. households is $69,021. Only five of the 35 places have a population of 10,000 or more.
Click here to see places in the United States with the most mega homes.
Click here to see our detailed methodology.
35. Tiburon, California
> Homes with 9 or more rooms: 24.7% — United States: 12.1%
> Median number of rooms: 6.2 — United States: 5.5
> Homes with 5 or more bedrooms: 11.6% — United States: 4.7%
> Homes worth $2 million or more: 72.0% — United States: 1.1%
> Median household income: $192,292 — United States: $69,021
> Population: 9,146
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34. Montecito, California
> Homes with 9 or more rooms: 25.2% — United States: 12.1%
> Median number of rooms: 6.5 — United States: 5.5
> Homes with 5 or more bedrooms: 10.4% — United States: 4.7%
> Homes worth $2 million or more: 76.0% — United States: 1.1%
> Median household income: $193,423 — United States: $69,021
> Population: 8,494
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33. Kentfield, California
> Homes with 9 or more rooms: 25.6% — United States: 12.1%
> Median number of rooms: 7.1 — United States: 5.5
> Homes with 5 or more bedrooms: 15.1% — United States: 4.7%
> Homes worth $2 million or more: 50.0% — United States: 1.1%
> Median household income: $209,750 — United States: $69,021
> Population: 7,517
32. Emerald Lake Hills, California
> Homes with 9 or more rooms: 26.2% — United States: 12.1%
> Median number of rooms: 7.4 — United States: 5.5
> Homes with 5 or more bedrooms: 17.5% — United States: 4.7%
> Homes worth $2 million or more: 66.8% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 4,545
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31. Saratoga, California
> Homes with 9 or more rooms: 27.3% — United States: 12.1%
> Median number of rooms: 7.3 — United States: 5.5
> Homes with 5 or more bedrooms: 18.4% — United States: 4.7%
> Homes worth $2 million or more: 76.1% — United States: 1.1%
> Median household income: $224,179 — United States: $69,021
> Population: 31,194
30. San Marino, California
> Homes with 9 or more rooms: 27.9% — United States: 12.1%
> Median number of rooms: 7.4 — United States: 5.5
> Homes with 5 or more bedrooms: 17.5% — United States: 4.7%
> Homes worth $2 million or more: 54.1% — United States: 1.1%
> Median household income: $174,722 — United States: $69,021
> Population: 12,620
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29. Palos Verdes Estates, California
> Homes with 9 or more rooms: 28.1% — United States: 12.1%
> Median number of rooms: 7.2 — United States: 5.5
> Homes with 5 or more bedrooms: 16.9% — United States: 4.7%
> Homes worth $2 million or more: 51.2% — United States: 1.1%
> Median household income: $202,569 — United States: $69,021
> Population: 13,403
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28. Sullivan’s Island, South Carolina
> Homes with 9 or more rooms: 29.0% — United States: 12.1%
> Median number of rooms: 7.2 — United States: 5.5
> Homes with 5 or more bedrooms: 24.3% — United States: 4.7%
> Homes worth $2 million or more: 53.9% — United States: 1.1%
> Median household income: $157,743 — United States: $69,021
> Population: 2,220
27. Belvedere, California
> Homes with 9 or more rooms: 29.3% — United States: 12.1%
> Median number of rooms: 7.3 — United States: 5.5
> Homes with 5 or more bedrooms: 14.2% — United States: 4.7%
> Homes worth $2 million or more: 93.7% — United States: 1.1%
> Median household income: $246,500 — United States: $69,021
> Population: 2,309
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26. Rancho Santa Fe, California
> Homes with 9 or more rooms: 32.4% — United States: 12.1%
> Median number of rooms: 7.7 — United States: 5.5
> Homes with 5 or more bedrooms: 36.1% — United States: 4.7%
> Homes worth $2 million or more: 77.6% — United States: 1.1%
> Median household income: $196,500 — United States: $69,021
> Population: 2,914
25. Woodside, California
> Homes with 9 or more rooms: 32.7% — United States: 12.1%
> Median number of rooms: 7.6 — United States: 5.5
> Homes with 5 or more bedrooms: 14.0% — United States: 4.7%
> Homes worth $2 million or more: 85.0% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 5,316
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23. Portola Valley, California
> Homes with 9 or more rooms: 34.0% — United States: 12.1%
> Median number of rooms: 7.4 — United States: 5.5
> Homes with 5 or more bedrooms: 14.0% — United States: 4.7%
> Homes worth $2 million or more: 87.9% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 4,458
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23. Loyola, California
> Homes with 9 or more rooms: 34.0% — United States: 12.1%
> Median number of rooms: 7.5 — United States: 5.5
> Homes with 5 or more bedrooms: 20.8% — United States: 4.7%
> Homes worth $2 million or more: 91.3% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 3,564
22. Southampton, New York
> Homes with 9 or more rooms: 34.8% — United States: 12.1%
> Median number of rooms: 7.2 — United States: 5.5
> Homes with 5 or more bedrooms: 23.8% — United States: 4.7%
> Homes worth $2 million or more: 50.3% — United States: 1.1%
> Median household income: $135,405 — United States: $69,021
> Population: 4,380
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21. Piedmont, California
> Homes with 9 or more rooms: 37.1% — United States: 12.1%
> Median number of rooms: 7.7 — United States: 5.5
> Homes with 5 or more bedrooms: 13.2% — United States: 4.7%
> Homes worth $2 million or more: 58.9% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 11,368
20. Ross, California
> Homes with 9 or more rooms: 37.2% — United States: 12.1%
> Median number of rooms: 7.7 — United States: 5.5
> Homes with 5 or more bedrooms: 24.4% — United States: 4.7%
> Homes worth $2 million or more: 78.9% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 2,405
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19. East Hampton, New York
> Homes with 9 or more rooms: 40.2% — United States: 12.1%
> Median number of rooms: 7.9 — United States: 5.5
> Homes with 5 or more bedrooms: 33.2% — United States: 4.7%
> Homes worth $2 million or more: 59.9% — United States: 1.1%
> Median household income: $96,250 — United States: $69,021
> Population: 1,062
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18. Monte Sereno, California
> Homes with 9 or more rooms: 42.1% — United States: 12.1%
> Median number of rooms: 8.2 — United States: 5.5
> Homes with 5 or more bedrooms: 27.9% — United States: 4.7%
> Homes worth $2 million or more: 84.6% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 3,502
17. Fairbanks Ranch, California
> Homes with 9 or more rooms: 43.0% — United States: 12.1%
> Median number of rooms: 7.9 — United States: 5.5
> Homes with 5 or more bedrooms: 39.5% — United States: 4.7%
> Homes worth $2 million or more: 66.5% — United States: 1.1%
> Median household income: $231,721 — United States: $69,021
> Population: 2,960
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16. Rolling Hills, California
> Homes with 9 or more rooms: 45.3% — United States: 12.1%
> Median number of rooms: 8.1 — United States: 5.5
> Homes with 5 or more bedrooms: 30.3% — United States: 4.7%
> Homes worth $2 million or more: 89.6% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 1,436
15. Medina, Washington
> Homes with 9 or more rooms: 46.5% — United States: 12.1%
> Median number of rooms: 8.3 — United States: 5.5
> Homes with 5 or more bedrooms: 19.9% — United States: 4.7%
> Homes worth $2 million or more: 66.2% — United States: 1.1%
> Median household income: $208,500 — United States: $69,021
> Population: 2,928
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14. Spring Lake, New Jersey
> Homes with 9 or more rooms: 46.7% — United States: 12.1%
> Median number of rooms: 8.3 — United States: 5.5
> Homes with 5 or more bedrooms: 44.2% — United States: 4.7%
> Homes worth $2 million or more: 63.3% — United States: 1.1%
> Median household income: $119,659 — United States: $69,021
> Population: 2,814
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13. Clyde Hill, Washington
> Homes with 9 or more rooms: 47.7% — United States: 12.1%
> Median number of rooms: 8.3 — United States: 5.5
> Homes with 5 or more bedrooms: 22.5% — United States: 4.7%
> Homes worth $2 million or more: 73.6% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 3,118
12. Alpine, New Jersey
> Homes with 9 or more rooms: 50.2% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 38.8% — United States: 4.7%
> Homes worth $2 million or more: 59.7% — United States: 1.1%
> Median household income: $196,875 — United States: $69,021
> Population: 1,336
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11. Los Altos Hills, California
> Homes with 9 or more rooms: 56.0% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 35.0% — United States: 4.7%
> Homes worth $2 million or more: 93.9% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 8,520
10. Yarrow Point, Washington
> Homes with 9 or more rooms: 57.6% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 27.1% — United States: 4.7%
> Homes worth $2 million or more: 80.8% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 1,365
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9. Hillsborough, California
> Homes with 9 or more rooms: 58.9% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 31.6% — United States: 4.7%
> Homes worth $2 million or more: 93.8% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 11,390
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8. Atherton, California
> Homes with 9 or more rooms: 60.2% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 40.4% — United States: 4.7%
> Homes worth $2 million or more: 93.5% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 7,181
7. Kings Point, New York
> Homes with 9 or more rooms: 63.9% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 41.8% — United States: 4.7%
> Homes worth $2 million or more: 53.0% — United States: 1.1%
> Median household income: $153,603 — United States: $69,021
> Population: 5,493
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6. Hidden Hills, California
> Homes with 9 or more rooms: 64.2% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 69.4% — United States: 4.7%
> Homes worth $2 million or more: 85.7% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 2,182
5. Sands Point, New York
> Homes with 9 or more rooms: 69.2% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 47.9% — United States: 4.7%
> Homes worth $2 million or more: 57.0% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 2,714
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4. Brookville, New York
> Homes with 9 or more rooms: 72.3% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 62.6% — United States: 4.7%
> Homes worth $2 million or more: 57.8% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 2,937
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3. Plandome, New York
> Homes with 9 or more rooms: 72.9% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 48.6% — United States: 4.7%
> Homes worth $2 million or more: 71.7% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 1,264
2. Tokeneke, Connecticut
> Homes with 9 or more rooms: 78.4% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 52.6% — United States: 4.7%
> Homes worth $2 million or more: 60.3% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 2,656
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1. Cherry Hills Village, Colorado
> Homes with 9 or more rooms: 84.8% — United States: 12.1%
> Median number of rooms: 10+ — United States: 5.5
> Homes with 5 or more bedrooms: 51.0% — United States: 4.7%
> Homes worth $2 million or more: 52.0% — United States: 1.1%
> Median household income: >$250,000 — United States: $69,021
> Population: 6,426
Methodology
To identify the places with the most mega homes, 24/7 Wall st. reviewed housing data from the U.S. Census Bureau’s 2021 American Community Survey 5-year Estimates. First we identified places (including towns, cities, and unincorporated areas) with at least 1,000 people and where at least half of owner-occupied homes have an estimated value of more than $2 million, the maximum amount measured by the Census. We then listed the 35 places where the largest share of homes have 9 rooms or more, the maximum tracked by the Census. All income and housing data are from the 2021 ACS 5-year estimates. Median annual household income similarly tops at $250,000 or more.
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