PlainCities

Census tract · Santa Clara County

Census Tract 5099.01, Santa Clara County, California

Census Tract 5099.01, GEOID 06085509901, in Santa Clara County, California, mostly within Mountain View, Santa Clara County (85% of its census blocks). 2,602 residents in the ACS 2020-2024 5-year estimates (±489); the 2020 Census counted 2,244.

Residents, 2020-2024

2,602

±489 (90% margin)
2020 Census count: 2,244

Median household income

$250,000 or more

The survey's top or bottom value; no margin is published
Santa Clara County: $164,281

Median home value

$2,000,000 or more

The survey's top or bottom value; no margin is published
Santa Clara County: $1,490,600

Median gross rent

$3,500 or more

The survey's top or bottom value; no margin is published
Santa Clara County: $2,857

Where is Census Tract 5099.01?

Census Tract 5099.01 is one of 408 census tracts in Santa Clara County, California. It covers 0.54 square miles of land, 4,171 residents per square mile in 2020. Its GEOID, 06085509901, names it uniquely (how tract numbers and GEOIDs work).

Places Census Tract 5099.01 lies in (share of its 2020 census blocks)
PlaceShare of the tract
Mountain View, Santa Clara County85%
Los Altos15%
Census Tract 5099.01 (marked with a dot) in Santa Clara County, California. Boundaries: Census Bureau 2024.
5098.015098.025099.025100.015102 5099.01 0.5 mi
Census Tract 5099.01 (shaded) and the tracts that border it, numbered. Boundaries: Census Bureau 2024 cartographic boundary file, 1:500,000.

5 census tracts border Census Tract 5099.01: Tract 5098.01 ($167,957), Tract 5098.02 ($220,694), Tract 5099.02 ($222,955), Tract 5100.01 ($250,000 or more) and Tract 5102 ($250,000 or more). The figure in brackets is each tract's median household income.

Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.

Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files

How many people live in Census Tract 5099.01?

The 2020-2024 American Community Survey puts Census Tract 5099.01's population at 2,602 (±489) in 775 households; the 2020 Census counted 2,244 residents and 768 housing units.

Counts, ACS 2020-2024 5-year estimates
MeasureTract 5099.01Mountain View, Santa Clara CountySanta Clara CountyCalifornia
Total population2,602±48983,7321,902,04739,287,377
Households775±12435,767659,35313,548,091
Average household size3.19±0.242.332.822.84
Housing units815±11639,458698,83714,644,735

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov

Who lives in Census Tract 5099.01?

The median resident of Census Tract 5099.01 is 42.3 years old; 31.7% are under 18 and 16.4% are 65 or older. The largest group is non-Hispanic white residents at 58.7%, then non-Hispanic Asian residents at 28.8%. 24.4% of residents were born outside the United States.

Age, origin, education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
MeasureTract 5099.01Mountain View, Santa Clara CountySanta Clara CountyCalifornia
Median age42.3±3.835.538.137.9
Under 18 years31.7%±4.8 pts19.9%20.5%22.0%
65 years and over16.4%±3.8 pts12.0%14.8%15.7%
Hispanic or Latino (any race)1.2%±1.1 pts17.5%25.0%40.2%
White alone, not Hispanic58.7%±9.6 pts37.4%27.2%33.8%
Black or African American alone, not Hispanic0.6%±0.9 pts2.4%2.2%5.2%
Asian alone, not Hispanic28.8%±7.3 pts36.3%40.3%15.3%
American Indian and Alaska Native alone, not Hispanic0.0%±1.6 pts0.1%0.2%0.3%
Native Hawaiian and Other Pacific Islander alone, not Hispanic0.0%±1.6 pts0.0%0.4%0.3%
Two or more races, not Hispanic5.6%±3.1 pts6.0%4.2%4.4%
Some other race alone, not Hispanic5.1%±6.5 pts0.4%0.6%0.6%
Born outside the United States24.4%±5.5 pts42.9%41.5%27.0%
Speak a language other than English at home (age 5+)31.1%±7.9 pts49.5%55.2%44.4%
Civilian veterans (age 18+)1.9%±1.6 pts2.1%2.6%4.3%
With a disability4.7%±2.2 pts7.3%9.0%11.6%
No health insurance coverage1.0%±0.9 pts2.4%3.9%6.6%
High school graduate or higher (age 25+)99.6%±0.6 pts95.0%89.3%84.7%
Bachelor's degree or higher (age 25+)84.0%±3.9 pts75.0%56.5%37.1%
Graduate or professional degree (age 25+)53.9%±5.9 pts45.1%28.3%14.4%
Lived in the same house a year earlier84.9%±6.0 pts80.2%86.0%89.2%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Census Tract 5099.01 earn?

Half of the 775 households in Census Tract 5099.01 earn less than $250,000 or more a year (), against $164,281 across Santa Clara County: 1st highest of the county's 404 tracts with a reliable estimate.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
MeasureTract 5099.01Mountain View, Santa Clara CountySanta Clara CountyCalifornia
Median household income$250,000 or more$189,917$164,281$99,122
Mean household income$416,240±$46,287$259,889$227,007$140,436
Per capita income$124,284±$14,354$112,591$80,312$49,513
People below the poverty line1.6%±1.2 pts6.0%7.1%12.0%
Children under 18 below the poverty line0.6%±1.4 pts6.4%7.0%15.0%
Households receiving SNAP1.2%±1.3 pts4.2%6.6%12.4%
Households with a computer99.2%±1.2 pts97.3%98.0%96.9%
Households with a broadband subscription99.2%±1.2 pts96.0%95.6%93.5%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Census Tract 5099.01?

Owners occupy 83.5% of Census Tract 5099.01's occupied homes and renters 16.5%. The median owner-occupied home is valued at $2,000,000 or more by its owner (). The median renter pays $3,500 or more a month including utilities, and 30.3% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
MeasureTract 5099.01Mountain View, Santa Clara CountySanta Clara CountyCalifornia
Median home value (owner-occupied)$2,000,000 or more$1,927,000$1,490,600$734,700
Median gross rent$3,500 or more$3,062$2,857$2,036
Renters paying 35% or more of income on rent30.3%±17.9 pts31.3%36.4%46.0%
Median monthly owner costs, with a mortgage$4,000 or more$4,000 or more$4,000 or more$2,946
Owner-occupied homes83.5%±6.2 pts38.6%55.1%55.9%
Renter-occupied homes16.5%±6.2 pts61.4%44.9%44.1%
Housing units815±11639,458698,83714,644,735
Single-family detached homes84.5%±5.7 pts26.8%50.7%57.0%
Mobile homes2.7%±3.2 pts3.2%2.8%3.5%
Built 2020 or later1.2%±1.5 pts4.1%1.5%1.3%
Built 2010 to 20190.5%±0.8 pts12.5%9.1%6.5%
Built 1939 or earlier3.1%±3.3 pts3.4%4.7%8.9%
Households with no vehicle1.2%±1.4 pts8.1%6.0%7.1%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How do people in Census Tract 5099.01 get to work?

52.8% of Census Tract 5099.01's workers drive alone and 34.9% work from home. The average trip to work takes 20.8 minutes.

Work and commuting, ACS 2020-2024 5-year estimates
MeasureTract 5099.01Mountain View, Santa Clara CountySanta Clara CountyCalifornia
In the labor force (age 16+)64.1%±5.9 pts73.6%67.4%63.8%
Unemployment rate2.7%±2.2 pts3.7%4.9%6.6%
Drove alone to work52.8%±14.4 pts51.8%59.9%65.7%
Carpooled0.7%±1.3 pts5.4%9.0%9.5%
Public transportation0.4%±0.7 pts3.9%2.3%2.9%
Walked7.6%±9.2 pts2.5%2.1%2.4%
Worked from home34.9%±7.3 pts30.6%23.9%17.2%
Mean travel time to work20.8 min±3.423.3 min26.2 min28.7 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

How does Census Tract 5099.01 compare with the other tracts in Santa Clara County?

Among Santa Clara County's tracts with a reliable estimate, Census Tract 5099.01 ranks as shown below (1 = highest).

Census Tract 5099.01's rank among the tracts of Santa Clara County and of Mountain View, Santa Clara County
MeasureIn Santa Clara CountyIn Mountain View, Santa Clara County
Population390th of 40819th of 21
Residents per square mile344th of 40819th of 21
Median household income1st of 4041st of 20
Per capita income41st of 4083rd of 21
Median home value1st of 3951st of 18
Median gross rent1st of 3941st of 21
Bachelor's degree or higher35th of 4083rd of 21
Median age118th of 4083rd of 21
Owner-occupied share56th of 3971st of 20

The tracts next to it on Santa Clara County's income ladder

Median household income, ACS 2020-2024 5-year estimates
TractRankMedian household incomeResidents
Tract 5029.031st$250,000 or more5,318
Tract 5033.131st$250,000 or more4,449
Tract 5033.301st$250,000 or more6,550
Tract 5033.381st$250,000 or more3,972
Tract 5033.391st$250,000 or more3,827
Tract 5066.031st$250,000 or more4,295
Tract 5068.011st$250,000 or more6,216
Tract 5070.021st$250,000 or more3,325
Tract 5070.031st$250,000 or more2,895
Tract 5072.061st$250,000 or more2,826
Tract 5073.021st$250,000 or more2,654
Tract 50761st$250,000 or more6,144
Tract 5077.021st$250,000 or more6,464
Tract 5077.051st$250,000 or more3,953
Tract 5078.071st$250,000 or more3,115
Tract 5078.081st$250,000 or more5,720
Tract 5079.041st$250,000 or more2,963
Tract 5079.061st$250,000 or more4,499
Tract 5080.041st$250,000 or more6,131
Tract 5081.011st$250,000 or more6,679
Tract 5082.031st$250,000 or more5,511
Tract 5082.041st$250,000 or more4,725
Tract 5082.061st$250,000 or more4,048
Tract 5083.011st$250,000 or more4,461
Tract 5083.061st$250,000 or more2,980
Tract 5084.031st$250,000 or more3,176
Tract 5087.081st$250,000 or more6,682
Tract 5091.091st$250,000 or more7,153
Tract 5099.011st$250,000 or more2,602
Tract 5100.011st$250,000 or more5,852
Tract 5100.021st$250,000 or more4,131
Tract 51011st$250,000 or more2,792
Tract 51021st$250,000 or more4,565
Tract 51031st$250,000 or more4,649
Tract 51041st$250,000 or more3,495
Tract 51051st$250,000 or more4,911
Tract 5108.011st$250,000 or more5,244
Tract 5108.021st$250,000 or more2,014
Tract 5108.031st$250,000 or more3,406
Tract 51101st$250,000 or more7,180
Tract 51111st$250,000 or more5,379
Tract 51121st$250,000 or more4,765
Tract 51141st$250,000 or more3,608
Tract 5115.021st$250,000 or more3,022
Tract 5117.011st$250,000 or more4,368
Tract 5117.021st$250,000 or more2,859
Tract 5117.041st$250,000 or more4,480
Tract 5117.051st$250,000 or more2,145
Tract 5119.051st$250,000 or more3,084
Tract 5119.071st$250,000 or more4,096
Tract 5119.101st$250,000 or more2,992
Tract 5119.131st$250,000 or more4,282
Tract 5119.141st$250,000 or more6,287
Tract 5119.171st$250,000 or more4,379
Tract 5119.181st$250,000 or more3,243
Tract 51221st$250,000 or more5,146

Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed

How reliable are the figures for Census Tract 5099.01?

3 of the 18 figures for Census Tract 5099.01 on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.

A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). How to read a margin of error.

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · Check it at data.census.gov

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections