2025 Compare Cities People:
Twin Falls, ID vs Waterloo, IA

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Highlights
- Waterloo is 0% more densely populated than Twin Falls.
- People are 14.7% less likely to be married in Waterloo.
- The Median Age is 2.8 years older in Waterloo.
 Twin Falls, IDWaterloo, IAUnited States
 Population  Unlock67,695329,725,481
 Female Population50.6%  Unlock50.5%
 Male Population49.5%  Unlock49.5%
 Median Age  Unlock36.838.4
 space3
 Population - 201044,511  Unlock309,327,143
 Population - 2000  Unlock68,747285,036,114
 Population - 199027,591  Unlock251,960,433
 Pop. 2000 to Now  Unlock-2.1%15.6%
 Pop. 1990 to Now86.3%  Unlock30.8%
 space4
 Population Density  Unlock1,100.993.4
 Land Area19.3  Unlock3,531,905.4
 Water Area  Unlock1.7264,836.8
 space
 Est. Total Population By Age
 Twin Falls, IDWaterloo, IAUnited States
 Age 0 to 46.9%  Unlock5.9%
 Age 5 to 9  Unlock6.6%6.1%
 Age 10 to 147.0%  Unlock6.6%
 Age 15 to 17  Unlock4.0%3.9%
 Age 18 to 203.6%  Unlock4.0%
 Age 21 to 24  Unlock5.8%5.2%
 Age 25 to 3415.7%  Unlock13.8%
 Age 35 to 44  Unlock12.4%12.9%
 Age 45 to 5410.2%  Unlock12.6%
 Age 55 to 59  Unlock6.0%6.7%
 Age 60 to 644.9%  Unlock6.3%
 Age 65 to 74  Unlock9.8%9.6%
 Age 75 to 845.0%  Unlock4.5%
 Age 85 and over  Unlock2.1%1.9%
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 Race
 Twin Falls, IDWaterloo, IAUnited States
 White77.3%  Unlock59.4%
 Black  Unlock17.1%12.2%
 Asian2.5%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races4.3%  Unlock3.2%
 Hispanic  Unlock7.1%18.4%
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 Marriage & Family
 Twin Falls, IDWaterloo, IAUnited States
 Married Population53.4%  Unlock49.8%
     Currently Married  Unlock43.8%48.0%
 Married but Separated1.7%  Unlock1.8%
 Single Population  Unlock54.5%50.2%
 Never Married26.8%  Unlock33.8%
 Divorced  Unlock11.6%10.8%
 Widowed6.1%  Unlock5.6%
 space5
 Household Size  Unlock2.312.60
 Households19,538  Unlock124,010,992
 Family Households  Unlock16,79880,755,759
     Married couple, w/children35.3%  Unlock30.5%
     Married couple, no children  Unlock41.6%42.9%
 Non Family Households6,983  Unlock43,255,233
     Single householder, w/children  Unlock22.6%15.8%
     Single householder, no children6.8%  Unlock10.8%
Reviews for Twin Falls    8 Reviews

Over 11 years ago

It is a hub community that is a gateway to the north of Sun Valley and to the south for Jackpot. New High School of 3 years to add to the established one. The hospital  More

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Over 12 years ago

Been living in Twin Falls for 2 plus years, like the people, very friendly. The Canyon is truly beautiful. Nice not to have to battle traffic, have places to walk to,  More

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In my 18 years here, Twin Falls has grown steadily, but all the schools, box stores, grocery stores are still within a 10-15 minute drive of each other. Traffic is a  More

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Reviews for Waterloo    5 Reviews

The bike racks recently installed on the MET buses was a great idea for a community that has numerous bike riders and  More

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Over 17 years ago

Unless you're into getting wasted on a regular basis there's not a lot to do here. Most people barhop for fun. Being someone who doesn't drink and doesn't enjoy being  More

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Over 17 years ago

So the weather is emotional here - on and off during the summer its hot and rainy, yet during the fall it is quite often beautiful. Winters can be long, and spring can  More

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