2026 Compare Cities People:
Round Rock, TX vs Rancho Cucamonga, CA

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Highlights
- Rancho Cucamonga is 0% more densely populated than Round Rock.
- People are 1.0% more likely to be married in Rancho Cucamonga.
- The Median Age is 1.3 years older in Rancho Cucamonga.
 Round Rock, TXRancho Cucamonga, CAUnited States
 Population  Unlock173,946329,725,481
 Female Population50.8%  Unlock50.5%
 Male Population49.2%  Unlock49.5%
 Median Age  Unlock36.938.4
 space3
 Population - 2010100,774  Unlock309,327,143
 Population - 2000  Unlock127,743285,036,114
 Population - 199030,923  Unlock251,960,433
 Pop. 2000 to Now  Unlock40.0%15.6%
 Pop. 1990 to Now344.9%  Unlock30.8%
 space4
 Population Density  Unlock4,336.093.4
 Land Area36.1  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Round Rock, TXRancho Cucamonga, CAUnited States
 Age 0 to 45.9%  Unlock5.9%
 Age 5 to 9  Unlock5.5%6.1%
 Age 10 to 147.8%  Unlock6.6%
 Age 15 to 17  Unlock3.8%3.9%
 Age 18 to 203.5%  Unlock4.0%
 Age 21 to 24  Unlock5.1%5.2%
 Age 25 to 3413.9%  Unlock13.8%
 Age 35 to 44  Unlock12.3%12.9%
 Age 45 to 5414.2%  Unlock12.6%
 Age 55 to 59  Unlock6.7%6.7%
 Age 60 to 644.7%  Unlock6.3%
 Age 65 to 74  Unlock7.9%9.6%
 Age 75 to 841.9%  Unlock4.5%
 Age 85 and over  Unlock1.5%1.9%
 space1
 Race
 Round Rock, TXRancho Cucamonga, CAUnited States
 White50.5%  Unlock59.4%
 Black  Unlock9.2%12.2%
 Asian6.9%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.6%0.4%
 Two or More Races3.5%  Unlock3.2%
 Hispanic  Unlock38.1%18.4%
 space2
 Marriage & Family
 Round Rock, TXRancho Cucamonga, CAUnited States
 Married Population52.7%  Unlock49.8%
     Currently Married  Unlock51.4%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock46.8%50.2%
 Never Married31.8%  Unlock33.8%
 Divorced  Unlock9.9%10.8%
 Widowed4.0%  Unlock5.6%
 space5
 Household Size  Unlock3.032.60
 Households43,705  Unlock124,010,992
 Family Households  Unlock43,21280,755,759
     Married couple, w/children42.0%  Unlock30.5%
     Married couple, no children  Unlock40.7%42.9%
 Non Family Households12,976  Unlock43,255,233
     Single householder, w/children  Unlock13.6%15.8%
     Single householder, no children10.3%  Unlock10.8%
Reviews for Round Rock    28 Reviews

I plan on relocating from Amarillo to Round Rock or one of the suburbs north of Austin with my wife and kids. I would like to know what people can tell me about the job  More

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Round Rock has a booming real estate market. It is one of the fastest growing communities in America. If you need more info about home buying in Round Rock, or anywhere  More

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We moved from Southern CA, we first lived at beach for many years in SD, then high desert (Hesperia). BEST MOVE I'VE EVER MADE IN MY LIFE!! The weather is great, the  More

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Reviews for Rancho Cucamonga    11 Reviews

I lived in rancho for a few years and I felt safe the city was clean every thing was at your finger tips Walmart target lots of fast foods  More

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Full of Republicans I hate the city I’m moving to Palm Springs the people here are ridiculous caring Trump flags making fun of me in the city a bunch of Lunitics.  More

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Over 13 years ago

Of all the homes or places of where I lived throughout my lifetime, I especially remember Rancho Cucamunga, CA. But this city's name when I was there was Alta Loma, and  More

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