TLDR
St. Louis's nonprofit sector spans the MO/IL state line via the Mississippi River. Mid-sized organizations frequently maintain dual-state operations, balancing MO's lighter regulatory regime against IL AG-990 compliance for cross-border programming.
Why St. Louis Has a Distinct Software Profile
St. Louis’s bistate MO/IL character creates registration complexity that single-state peers do not face. The MO regulatory regime is light; the IL regime is moderate but more demanding for organizations with even minimal cross-border activity. Mid-sized STL organizations operating in both states maintain dual financial reporting plus IL AG-990 compliance.
What to Look For in Software for St. Louis
Three capabilities matter most:
- Bistate (MO/IL) registration tracking
- Multi-county vendor registration across STL County, STL City, Madison, and St. Clair
- Federal pass-through readiness
State Context
For state-level details, see the Missouri and Illinois state guides.
12,000 registered nonprofits in St. Louis.
Source: Urban Institute NCCS
Source: ProPublica Nonprofit Explorer
Source: Urban Institute NCCS
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Top St. Louis Funders
| Funder | Type | Annual Giving |
|---|---|---|
| St. Louis Community Foundation | community foundation | $80M |
| Danforth Foundation | private foundation | $30M |
| Greater Saint Louis Inc. (United Way) | united way | |
| Missouri Foundation for Health | private foundation | $40M |
| Deaconess Foundation | private foundation | $8M |
| Centene Charitable Foundation | corporate foundation | $15M |
St. Louis Subareas by Nonprofit Count
| Area | Registered Nonprofits |
|---|---|
| St. Louis County, MO | 6,500 |
| St. Louis City, MO | 3,000 |
| St. Charles County, MO | 1,200 |
| Madison County, IL | 800 |
| St. Clair County, IL | 500 |
Local Compliance Notes - St. Louis
MO Charitable Registration
MO does not require charitable solicitation registration. IRS compliance is primary.
IL AG-990 Cross-Border
St. Louis nonprofits operating in Illinois (Madison, St. Clair, Monroe counties) must register with the IL AG and file the AG-990-IL annually.
Registration Requirements - St. Louis, MO
MO does not require state-level charitable registration. IL requires AG-990-IL annually for organizations operating cross-border. Bistate STL organizations carry IL registration overhead even when headquartered in MO.
Grant Cycle Seasonality - St. Louis
City of St. Louis runs July 1 - June 30. St. Louis County runs January 1 - December 31. MO state runs July 1 - June 30. IL state runs July 1 - June 30. Federal awards follow October 1 - September 30.
Frequently asked
Frequently Asked Questions
How many nonprofits operate in metro St. Louis?
What grant management software do St. Louis nonprofits use most often?
What is the most common compliance failure for St. Louis nonprofits?
How does Missouri Foundation for Health shape the local sector?
When does IL require audited financials?
St. Louis is one of 100 cities covered in our nonprofit software guides.