2025 Compare Cities People:
Waterloo, IA vs St. Louis, MO

Change Cities
Highlights
- St. Louis is 0% more densely populated than Waterloo.
- People are 26.1% less likely to be married in St. Louis.
- The Median Age is 0.5 years younger in St. Louis.
 Waterloo, IASt. Louis, MOUnited States
 Population  Unlock302,787329,725,481
 Female Population50.2%  Unlock50.5%
 Male Population49.8%  Unlock49.5%
 Median Age  Unlock36.338.4
 space3
 Population - 201068,488  Unlock309,327,143
 Population - 2000  Unlock348,189285,036,114
 Population - 199066,467  Unlock251,960,433
 Pop. 2000 to Now  Unlock-14.5%15.6%
 Pop. 1990 to Now1.2%  Unlock30.8%
 space4
 Population Density  Unlock4,903.993.4
 Land Area61.5  Unlock3,531,905.4
 Water Area  Unlock4.3264,836.8
 space
 Est. Total Population By Age
 Waterloo, IASt. Louis, MOUnited States
 Age 0 to 47.1%  Unlock5.9%
 Age 5 to 9  Unlock4.8%6.1%
 Age 10 to 146.2%  Unlock6.6%
 Age 15 to 17  Unlock2.8%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock5.4%5.2%
 Age 25 to 3414.3%  Unlock13.8%
 Age 35 to 44  Unlock13.7%12.9%
 Age 45 to 5411.3%  Unlock12.6%
 Age 55 to 59  Unlock6.4%6.7%
 Age 60 to 646.8%  Unlock6.3%
 Age 65 to 74  Unlock8.8%9.6%
 Age 75 to 844.4%  Unlock4.5%
 Age 85 and over  Unlock1.7%1.9%
 space1
 Race
 Waterloo, IASt. Louis, MOUnited States
 White68.9%  Unlock59.4%
 Black  Unlock44.6%12.2%
 Asian2.5%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.4%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races3.7%  Unlock3.2%
 Hispanic  Unlock4.2%18.4%
 space2
 Marriage & Family
 Waterloo, IASt. Louis, MOUnited States
 Married Population45.5%  Unlock49.8%
     Currently Married  Unlock30.7%48.0%
 Married but Separated1.7%  Unlock1.8%
 Single Population  Unlock66.4%50.2%
 Never Married37.5%  Unlock33.8%
 Divorced  Unlock12.3%10.8%
 Widowed5.4%  Unlock5.6%
 space5
 Household Size  Unlock2.082.60
 Households28,912  Unlock124,010,992
 Family Households  Unlock62,55980,755,759
     Married couple, w/children26.4%  Unlock30.5%
     Married couple, no children  Unlock36.1%42.9%
 Non Family Households12,114  Unlock43,255,233
     Single householder, w/children  Unlock26.9%15.8%
     Single householder, no children9.4%  Unlock10.8%
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

   |    Reply

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

   |    Reply

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

   |    Reply

Start Your Review of Waterloo

Reviews for St. Louis    113 Reviews

I'm 65 and lived here my entire life. Growing up in St. Louis I've learned there is a like to like about it. Lots of first class Hospitals and Doctors, LOTS of great  More

   |    Reply

This is an outsider's perspective on St. Louis. Sometimes a fresh perspective looking in from the outside is helpful. I don't live there as of this writing (Dec 22) but  More

   |    Reply

Over 3 years ago

I have travelled extensively and have lived in several other cities around the country. I chose to live in St. Louis city because it has many big city amenities with an  More

   |    Reply

Start Your Review of St. Louis


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.