Monthly Budget in St. Louis for a Family of Four
What it costs two adults, two children to live in St. Louis, MO in 2026.
$7,193
Total Monthly
$143,856
Annual Salary Needed
$8,991/mo after tax
87
Cost Index
Direct Answer
A family of four in St. Louis, MO should budget about $7,193/mo before savings. To keep a 20% savings margin, the estimated salary target is $143,856/year, or $8,991/mo after tax.
This budget is built for two adults, two children and separates essentials from lifestyle spending so readers can quickly see what is required, what is flexible, and what salary keeps the plan from becoming paycheck-to-paycheck.
Monthly household budgetBLS, HUD, ACS inputsLast verified May 2026
Complete Monthly Budget
| Category | Expense | Monthly Cost |
|---|---|---|
| Essential | Rent (3BR apartment) | $1,346 |
| Essential | Groceries & household supplies | $1,123 |
| Essential | Utilities (electric, gas, water) | $327 |
| Essential | Transportation (gas, transit, maintenance) | $770 |
| Essential | Car insurance | $266 |
| Essential | Health insurance (family plan) | $1,448 |
| Lifestyle | Internet & streaming | $65 |
| Lifestyle | Phone plan (4 lines) | $238 |
| Lifestyle | Dining out & takeout | $305 |
| Lifestyle | Entertainment & recreation | $261 |
| Essential | Childcare (2 children) | $1,044 |
| Essentials Subtotal | $6,324 | |
| Lifestyle Subtotal | $869 | |
| Total Monthly Budget | $7,193 |
What Drives This Budget?
Housing share
19%
3BR apartment rent is the largest budget line at $1,346/mo.
Essential spend
88%
$6,324/mo covers housing, food, utilities, transport, insurance, and childcare.
Lifestyle spend
12%
$869/mo is reserved for internet, phone, dining, entertainment, and recreation.
Savings buffer
$1,798
The salary target includes this monthly cushion instead of only breaking even.
Salary Needed: To live in St. Louis as two adults, two children with a 20% savings margin, you need approximately $143,856/year before taxes, assuming a 25% tax reserve.Check affordability
Budget Planning Checklist
- Use $7,193/mo as the baseline spending plan before debt payments, tuition, or unusual medical costs.
- Keep rent near $1,346/mo if you want the $143,856/yr salary target to stay realistic.
- Run the affordability page for St. Louis if your actual salary is materially below $143,856/yr.