Weldon Spring, MO: Population, ZIP Codes & Nearby Cities

Weldon Spring is an incorporated town-sized municipality in St. Charles County, Missouri. In the dataset behind this page it has an estimated population of 5,533, sits at 38.712°N, 90.651°W, and observes Central time. Below you will find how it ranks inside Missouri, which ZIP codes it uses, the closest places around it, and how far it is from major US cities.

What are the key facts about Weldon Spring, MO?

What is the population of Weldon Spring, MO?

Weldon Spring has an estimated population of 5,533. That makes it the 137th largest of the 1,020 places we list in Missouri, and the 8th largest of 18 places in St. Charles County. The typical place in Missouri has about 482 residents, so Weldon Spring is roughly 11.5 times the size of a typical neighbor in the state.

Estimates for places of this size carry wider margins of error than those for big cities, so treat the figure as a guide to scale. Our guide to understanding city population numbers explains why sources disagree.

Places in Missouri with a similar population include Richmond (5,653), Cottleville (5,608), Bowling Green (5,608), Peculiar (5,478), Charleston (5,468). Comparing these pages is a quick way to see how Weldon Spring differs from communities of the same scale.

How dense is Weldon Spring?

Weldon Spring has about 723 people per square mile (279 per square kilometer), which we classify as small-town or exurban. Within Missouri, it is denser than about 47% of the listed places. Homes at this level are spread out with larger lots, and most daily trips involve a car, though a small central area may still be walkable. Read how to interpret population density to see how we draw these lines.

What ZIP codes does Weldon Spring use?

The postal data lists a single ZIP code for Weldon Spring: 63304. A single code usually means a compact delivery area, but the same code may also serve addresses just outside the town line. Codes beginning with 6 are assigned to the central Midwest (Illinois, Kansas, Missouri and Nebraska). Learn more in our guide to how ZIP codes work or check any code with the ZIP code lookup.

What time zone is Weldon Spring in?

Weldon Spring is in the Central time zone, which is UTC−6 from Coordinated Universal Time in standard time (IANA zone America/Chicago). The area observes daylight saving time, so clocks move forward in March and back in November. The nearest listed place in a different time zone is Vincennes, IN, about 169 miles away, which gives a sense of how far the nearest zone boundary may be. Current local time: see the Central time hub. For the rules behind these zones, read US time zones explained.

Where is Weldon Spring located in Missouri?

Weldon Spring lies in the eastern part of Missouri, at 38.712° north latitude and 90.651° west longitude. The state capital, Jefferson City, is about 83 miles to the west. The closest listed place in another state is Cahokia, IL, roughly 27 miles to the east, which shows how near Weldon Spring is to a state line. For big-city services, the nearest place with more than 100,000 people is St. Louis, MO, 23 miles to the east.

Which cities are near Weldon Spring, MO?

The closest listed place to Weldon Spring is Cottleville, MO, 2.8 miles to the north. Of the eight nearest places below, 5 are in the same county. Distances are straight-line (great-circle) miles measured between place centers; see how distance is calculated.

Which county is Weldon Spring in?

Weldon Spring is in St. Charles County, which has the Federal Information Processing Standards (FIPS) code 29183. The county contains 18 places in our data, 8 of which have their own page here and 10 smaller communities that appear only in county and state lists. Other places in the county include O'Fallon (88,673), St. Charles (71,028), St. Peters (58,212), Wentzville (41,784), Lake St. Louis (16,864). Codes like this one help separate places that share a name; see the guide to counties and FIPS codes.

How far is Weldon Spring from major US cities?

Among six major hubs, Weldon Spring is closest to Chicago, IL at about 267 miles and farthest from Los Angeles, CA at about 1,569 miles in a straight line. Road distances are usually 10 to 30 percent longer. Try the distance calculator for any other pair.

Are there other places called Weldon Spring?

No. In our data, Weldon Spring in St. Charles County, Missouri is the only place with this name, so the name alone is enough to identify it, though adding the state is still good practice in addresses and forms.

Planning a move to Weldon Spring?

If you are weighing Weldon Spring, start with the practical numbers: how far it is from where you live, whether it changes your time zone, and how its size and density compare with your current city. Use the distance calculator to measure the trip from where you live. The radius search tool lists every place within any distance of it. Our checklist for comparing cities explains what to check next.

Where to go next

Population and density come from a compiled dataset and are estimates. They may differ from official Census Bureau counts. Verify important figures at census.gov.