O'Fallon, Illinois, sits just a short drive from the Mississippi River, about 3 km from St. Louis Lambert International Airport (STL), making it an easy landing spot for newcomers. The town's continental climate brings distinct seasons, with hot summers and cold winters, and its elevation of 129 m keeps things relatively flat and walkable. Expats tend to cluster in the O'Fallon West neighborhood, a quiet, family-friendly area with tree-lined streets and easy access to local parks. With a population of 32 thousand, it's a small community where you'll quickly get to know your neighbors, and the small expat community means you'll likely connect with other transplants at local events or coffee shops.
Living here is notably more affordable than in major metros, with a cost of living index of 71 out of 100 compared to New York City. A one-bedroom apartment in the city center runs about $1,450/mo, while outside the center it's $1,200/mo; for a three-bedroom, expect $2,550/mo in the center and $2,100/mo outside. For a single adult, a budget tier total including rent comes to $2,550/mo, a mid-range tier to $3,400/mo, and a comfortable tier to $4,500/mo. Excluding rent, a single person spends about $1,100/mo, and a family of four about $3,900/mo. Utilities run $229/mo, a mobile phone plan $64/mo, and a gym membership $35/mo. Eating out is inexpensive: a meal at an inexpensive restaurant costs $13, a three-course meal for two at a mid-range spot is $40, and a cappuccino is $5. The average monthly net salary is $4,500/mo, which means most residents can live comfortably and still save.
Safety is a standout feature here, with a safety index of 90 out of 100 and a crime index of just 12 out of 100, indicating a very low crime rate. Healthcare quality is rated as excellent, and English is widely spoken, so navigating medical appointments or everyday interactions is stress-free. The air quality index is 52, which is moderate, but the overall environment feels clean and well-maintained. For those considering a move, the town's strong safety record and healthcare access make it particularly appealing for families and retirees.
When it comes to moving here, the nearest airport is STL, just 3 km away, so international arrivals are convenient. Visa options exist for various purposes, but you'll need to research the specific pathways that apply to your situation. O'Fallon suits a range of lifestyles: digital nomads will appreciate the 120 Mbps average internet speed and a digital nomad score of 73 out of 100, while those focused on financial independence or retirement will find the FIRE score of 67 out of 100 and retiree score of 67 out of 100 reassuring. The overall expat score is 73 out of 100, reflecting a welcoming, practical place to settle down.