2026 Compare Cities People:
Thornton, CO vs Round Rock, TX

Change Cities
Highlights
- Round Rock is 0% more densely populated than Thornton.
- People are 1.9% less likely to be married in Round Rock.
- The Median Age is 1.9 years older in Round Rock.
 Thornton, CORound Rock, TXUnited States
 Population  Unlock117,735329,725,481
 Female Population49.6%  Unlock50.5%
 Male Population50.4%  Unlock49.5%
 Median Age  Unlock35.638.4
 space3
 Population - 2010119,544  Unlock309,327,143
 Population - 2000  Unlock61,136285,036,114
 Population - 199055,031  Unlock251,960,433
 Pop. 2000 to Now  Unlock125.0%15.6%
 Pop. 1990 to Now169.1%  Unlock30.8%
 space4
 Population Density  Unlock3,264.393.4
 Land Area35.3  Unlock3,531,905.4
 Water Area  Unlock0.3264,836.8
 space
 Est. Total Population By Age
 Thornton, CORound Rock, TXUnited States
 Age 0 to 46.9%  Unlock5.9%
 Age 5 to 9  Unlock7.4%6.1%
 Age 10 to 148.9%  Unlock6.6%
 Age 15 to 17  Unlock4.9%3.9%
 Age 18 to 203.3%  Unlock4.0%
 Age 21 to 24  Unlock5.6%5.2%
 Age 25 to 3416.0%  Unlock13.8%
 Age 35 to 44  Unlock16.9%12.9%
 Age 45 to 5412.9%  Unlock12.6%
 Age 55 to 59  Unlock5.6%6.7%
 Age 60 to 644.1%  Unlock6.3%
 Age 65 to 74  Unlock6.5%9.6%
 Age 75 to 842.6%  Unlock4.5%
 Age 85 and over  Unlock1.1%1.9%
 space1
 Race
 Thornton, CORound Rock, TXUnited States
 White52.7%  Unlock59.4%
 Black  Unlock10.5%12.2%
 Asian5.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.5%0.4%
 Two or More Races3.3%  Unlock3.2%
 Hispanic  Unlock27.7%18.4%
 space2
 Marriage & Family
 Thornton, CORound Rock, TXUnited States
 Married Population53.7%  Unlock49.8%
     Currently Married  Unlock51.2%48.0%
 Married but Separated1.3%  Unlock1.8%
 Single Population  Unlock47.3%50.2%
 Never Married32.6%  Unlock33.8%
 Divorced  Unlock11.5%10.8%
 Widowed3.2%  Unlock5.6%
 space5
 Household Size  Unlock2.682.60
 Households47,599  Unlock124,010,992
 Family Households  Unlock30,72980,755,759
     Married couple, w/children40.7%  Unlock30.5%
     Married couple, no children  Unlock32.0%42.9%
 Non Family Households13,584  Unlock43,255,233
     Single householder, w/children  Unlock15.7%15.8%
     Single householder, no children7.8%  Unlock10.8%
Reviews for Thornton    5 Reviews

Good place. Very suburbany (similar to the Springs). The houses are very small and old and yet still very expensive (albeit cheaper than southern Denver). Actually lots  More

   |    Reply

Over 6 years ago

I like Denver metro, but some cities aren’t too great. Thornton being one of them. Moved here because of highway access, and convenience to DIA for business travel. Am  More

   |    Reply

Over 11 years ago

The quality of life here in not good. The traffic is bad all the time. To try to get to the mountains takes forever! Also most lakes along the front range you can't even  More

   |    Reply

Start Your Review of Thornton

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

   |    Reply

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

   |    Reply

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

   |    Reply

Start Your Review of Round Rock


Premium Subscription
Includes Cost of Living compares for child care, utilities, transportation, health, taxes, housing for home owners vs renters, weather, insurance premiums and so much more.


The premier source for comprehensive city data for over 30 years.

© Best Places. All rights reserved.