Real Estate Investing in Saint Clair County, Illinois

Everything the listing leaves out — vacancy, rent trend, cap rate, landlord climate. All free.

21 ZIP codes • Population: 222,562

Should you buy in Saint Clair County, IL? Our answer, based on the numbers below.

🏠 For Homebuyers
MIXED
Grade C (68/100)

Mixed signals β€” some positives, some negatives. Worth considering but not a slam-dunk.

πŸ“ˆ For Investors
GOOD
3.3 / 5 (67/100)

A cash-flow market β€” rent-to-price math works from day one, though value growth is modest. Great for income-focused investors.

⚠️ Risks to Know
1 flag
  • High vacancy: 13.2% of homes vacant β€” above national norms.

What’s happening in Saint Clair County, IL?

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3.3/ 5

Investability

County-wide average

2.0/ 5

Appreciation

2.3% 5yr CAGR

5.0/ 5

Landlord Climate

Regulatory friendliness

Avg Investability β˜…β˜…β˜…β˜…β˜…
Avg Home Value $162,980
Avg Monthly Rent $1,115
ZIP Codes 21

Investing in Saint Clair County Real Estate

Saint Clair County (IL) covers 21 ZIPs and 17 municipalities. clearly the fundamentals here skew distressed, and both rent and price trends have been subdued across most of the geography.

Investors considering Saint Clair, Illinois should understand what the β˜…β˜…β˜…β˜†β˜† rating represents β€” a region with material challenges, not a temporary rough patch.

A 222,562 population and $N/AK household income profile is what makes Saint Clair a challenging rental region β€” the base is present, but the affordability math is tight.

A great house in the wrong ZIP is still a bad deal — screen every market by cash flow & cap rate.
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Landlord Ground Truth

Real numbers from people who own or manage rentals in Saint Clair County, IL. Anonymous, moderated, never written by AI.

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Avg Home Value
$162,980
Avg Monthly Rent
$1,115
1% Rule
βœ— Below
Landlord Friendly (IL)
β˜…β˜…β˜…β˜…β˜…

πŸŽ“ Colleges & Universities in Saint Clair County

2 Colleges 10,030 Students 3,182 Off-Campus Renters
C
Southwestern Illinois College
2-Year Public Β· 7,955 students
πŸ“ ~3,182 students rent off-campus
C
McKendree University
4-Year Private Β· 2,075 students

Investor Insight: With 3,182 students living off-campus, Saint Clair County has substantial rental demand from the college population β€” typically stable, lease-renewing tenants.

Cities in Saint Clair County

ZIP Codes in Saint Clair County, IL

62269 β˜… β˜… β˜… β˜… β˜…
O Fallon
Population 35,536
Avg Home $318,263
Avg Rent $1,732/mo
62221 β˜… β˜… β˜… β˜… β˜…
Shiloh
Population 29,281
Avg Home $255,794
Avg Rent $1,194/mo
62226 β˜… β˜… β˜… β˜… β˜…
Belleville
Population 28,543
Avg Home $186,172
Avg Rent $1,232/mo
62220 β˜… β˜… β˜… β˜… β˜…
Belleville
Population 19,391
Avg Home $155,547
Avg Rent $1,024/mo
62208 β˜… β˜… β˜… β˜… β˜…
Fairview Heights
Population 16,653
Avg Home $199,591
Avg Rent $1,444/mo
62206 β˜… β˜… β˜… β˜… β˜…
Cahokia
Population 13,155
Avg Home $52,802
Avg Rent $1,312/mo
62258 β˜… β˜… β˜… β˜… β˜…
Mascoutah
Population 10,292
Avg Home $269,614
Avg Rent $1,403/mo
62232 β˜… β˜… β˜… β˜… β˜…
Caseyville
Population 7,480
Avg Home $147,150
Avg Rent $1,098/mo
62207 β˜… β˜… β˜… β˜… β˜…
Centreville
Population 6,801
Avg Home $40,057
Avg Rent $891/mo
62243 β˜… β˜… β˜… β˜… β˜…
Freeburg
Population 6,522
Avg Home $274,448
Avg Rent $1,143/mo
62260 β˜… β˜… β˜… β˜… β˜…
Millstadt
Population 6,518
Avg Home $302,353
Avg Rent $1,170/mo
62254 β˜… β˜… β˜… β˜… β˜…
Lebanon
Population 6,339
Avg Home $214,990
Avg Rent $1,290/mo
62205 β˜… β˜… β˜… β˜… β˜…
East Saint Louis
Population 5,760
Avg Home $36,493
Avg Rent $1,053/mo
62203 β˜… β˜… β˜… β˜… β˜…
East Saint Louis
Population 5,539
Avg Home $40,971
Avg Rent $1,017/mo
62201 β˜… β˜… β˜… β˜… β˜…
East Saint Louis
Population 5,017
Avg Home $52,670
Avg Rent $891/mo
62204 β˜… β˜… β˜… β˜… β˜…
East Saint Louis
Population 4,824
Avg Home $36,071
Avg Rent $891/mo
62239 β˜… β˜… β˜… β˜… β˜…
Dupo
Population 4,381
Avg Home $127,232
Avg Rent $954/mo
62285 β˜… β˜… β˜… β˜… β˜…
Smithton
Population 4,187
Avg Home $315,586
Avg Rent $891/mo
62264 β˜… β˜… β˜… β˜… β˜…
New Athens
Population 3,152
Avg Home $164,127
Avg Rent $999/mo
62257 β˜… β˜… β˜… β˜… β˜…
Marissa
Population 1,960
Avg Home $112,301
Avg Rent $891/mo
62255 β˜… β˜… β˜… β˜… β˜…
Lenzburg
Population 1,231
Avg Home $120,350
Avg Rent $900/mo

Screen every market in Saint Clair County

Filter this county’s ZIPs by cap rate, vacancy, appreciation and 30+ more criteria, and export your shortlist to CSV — with the Investor plan ($19/mo). Add weekly alerts when these markets move with Investor Pro+.

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Frequently Asked Questions About Saint Clair County

Does, IL make sense for an investment property?

Yes -, IL a 3.3/5 investability score. With $163K home prices against $1,115/mo monthly rent, the market delivers a reasonable entry point for new investors.

Are tenants stable in, IL?

Expect a solid tenant pool in, IL. The rental market absorbs $1,115/mo rents without meaningful friction.

How much rent can I charge in, IL?

Rental rates in, IL average $1,115/mo. Tenant demand and $163K home values make the yield look reasonable by investor standards.

How do experienced investors play, IL?

For, IL, careful cash-flow rentals with hands-on management is the standard investor playbook. The market structure makes it a reasonable default approach.

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