Williamson County IL FSBO Homes (451)

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We have 451 homes for sale by owner in Williamson County, IL. The median list price in Williamson County, IL is $351,351 and the average price per square foot is $1,821.

Homes For Sale

$589,995

4 Bed
3 Bath
4,087 Sqft
0.48 Acre(Lot)

2200 Brentwood Drive, Williamson County, IL

Stunning all-brick 4 bedroom home with finished basement & private backyard oasis. welcome to this beautifully... Read More

Vacant Land For Sale

$250,000

19.44 Acres(Lot)

TBD Country Club Road, Williamson County, IL

Nearly 20 acres across from lake of egypt country club- building sites with frontage on country club and power... Read More

Homes For Sale

$180,000

2 Bed
1 Bath
1,300 Sqft

814 W 15th Street, Williamson County, IL

Nestled at the edge of johnston city, this home offers a country setting with convenient access to local... Read More

Homes For Sale

$150,000

3 Bed
1 Bath
1,056 Sqft

405 S Aikman Street, Williamson County, IL

This completely remodeled 3-bedroom, 1-bath home is move-in ready and packed with charm and modern updates. from... Read More

Homes For Sale

$185,000

3 Bed
2 Bath
1,305 Sqft

1804 Bridge Street, Williamson County, IL

Welcome home! this quality-built treasure is tucked in a quiet, low-traffic neighborhood where peace and privacy... Read More

Homes For Sale

$219,900

3 Bed
2 Bath
2,001 Sqft
0.42 Acre(Lot)

303 S Greenbriar Road, Williamson County, IL

Nestled in a tree-shaded setting, this beautifully landscaped property in west carterville offers a fully fenced... Read More

Homes For Sale

$150,000

3 Bed
1 Bath
1,280 Sqft

216 Iowa Street, Williamson County, IL

This is the home for you! due to relocation, this great home can be yours. this inviting 3 bedroom, 1 bath home... Read More

Homes For Sale

$240,000

4 Bed
2 Bath
2,465 Sqft

617 S Calumet Street, Williamson County, IL

Welcome to this meticulously maintained and richly updated home that blends rustic charm with modern comfort!... Read More

Homes For Sale

$85,000

2 Bed
1 Bath
1,312 Sqft

604 S 23rd Street, Williamson County, IL

Unlock the potential of this two bedroom one bath home situated on two spacious lots this property is a blank... Read More

Homes For Sale

$315,000

3 Bed
2 Bath
2,394 Sqft

106 Jeremy Drive, Williamson County, IL

Charming 3-bedroom home in carterville school district nestled at 106 jeremy dr in carterville, this... Read More

Homes For Sale

$329,000

3 Bed
3 Bath
1,778 Sqft
1.84 Acres(Lot)

11964 Strawberry Road, Williamson County, IL

This beautifully maintained home offers the perfect blend of rural tranquility and modern convenience. located... Read More

Homes For Sale

$189,900

3 Bed
2 Bath
1,644 Sqft
0.21 Acre(Lot)

301 S Pershing Street, Williamson County, IL

This building is listed in both residential and commercial. it was a residence before it became a dentist office... Read More

Homes For Sale

$117,500

3 Bed
2 Bath
1,176 Sqft

600 S Future Street, Williamson County, IL

Welcome to this 3-bedroom, 2-bathroom ranch-style home, offering 1,176 square feet of comfortable living space.... Read More

Homes For Sale

$67,000

3 Bed
1 Bath
1,204 Sqft
0.16 Acre(Lot)

920 S 12th Street, Williamson County, IL

Whether as an investment property or a starter home, this bungalow on a corner lot location makes it a solid... Read More

Homes For Sale

$149,000

3 Bed
2 Bath
1,173 Sqft

800 Division Street, Williamson County, IL

Classic 3-bedroom 2 bath bungalow that blends timeless character with modern updates. sellers have renovated the... Read More

Homes For Sale

$67,000

3 Bed
2 Bath
1,008 Sqft
0.17 Acre(Lot)

1004 E Carter Street, Williamson County, IL

This conveniently located 3-bedroom, 2-bath home is perfect for first-time buyers or investors looking for a... Read More

Homes For Sale

$76,000

2 Bed
1 Bath
1,008 Sqft
0.19 Acre(Lot)

1308 N Glendale Street, Williamson County, IL

Cozy 2-bedroom bungalow, featuring 2 comfortable bedrooms, a full bath, a basement for extra storage, an extra... Read More

Homes For Sale

$69,900

2 Bed
1 Bath
868 Sqft

510 W Idaho Avenue, Williamson County, IL

Adorable 2 bedroom, 1 bath home located near downtown carterville illinois. carterville school district. ready... Read More

Vacant Land For Sale

$95,000

0.447 Acre(Lot)

0000 Kokopelli Drive, Williamson County, IL

If you've always wanted to live in a golf community and were just waiting on that perfect lot to build your... Read More

Vacant Land For Sale

$29,000

0.2 Acre(Lot)

001 Clark Street, Williamson County, IL

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Williamson County - Statistics and Home Trends

Actives Activity Chart

Homes For Sale Buy Owner in Williamson County 185

	Average Price
1 Bed Homes For Sale in Williamson County (5)	$ 84,600
2 Bed Homes For Sale in Williamson County (29)	$ 124,279
3 Bed Homes For Sale in Williamson County (91)	$ 227,223
4 Bed Homes For Sale in Williamson County (40)	$ 391,097
5+ Bed Homes For Sale in Williamson County (19)	$ 678,572

AVERAGE PRICE

$ 301,154

NEW LISTINGS THIS WEEK

165

PRICE PER SQUARE FOOT

$ 137

Townhomes For Sale Buy Owner in Williamson County 8

	Average Price
2 Bed Townhomes For Sale in Williamson County (1)	$ 249,900
3 Bed Townhomes For Sale in Williamson County (5)	$ 339,260
4 Bed Townhomes For Sale in Williamson County (2)	$ 233,750

AVERAGE PRICE

$ 291,085

NEW LISTINGS THIS WEEK

PRICE PER SQUARE FOOT

$ 146

Land For Sale Buy Owner in Williamson County 130

	Average Price
Land For Sale in Williamson County (130)	$ 312,906

AVERAGE PRICE

$ 312,906

NEW LISTINGS THIS WEEK

117

PRICE PER SQUARE FOOT

$ N/A

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Learn More About Williamson County, Illinois

Currently there are 185 homes for sale, 130 vacant land for sale and 8 townhomes for sale in Williamson County

Currently Williamson County has 323 properties on the market for sale. The inventory was last updated 05/04/2025. Of these properties, 185 single family homes are for sale by their owners in Williamson County, and 0 condos are for sale by their owners in Williamson County. The average price of the single family homes for sale in Williamson County, is $301,154, the average condo price in Williamson County, is $291,085. The average price per square foot of the active inventory is $94. This is based the living area square footage.

Over the last year, there have been 0 of properties sold in Williamson County. Of these properties, 0 single family homes have sold by their owners in Williamson County, and 0 condos have sold by their owners in Williamson County. The average sales price of the single family homes sold in Williamson County, is $. Single family homes have been selling for per square foot of living area. The average sales price of the condos for sale in Williamson County, is $. Condos have been selling for per square foot of living area.

If you are thinking of selling your Williamson County home, try our flat fee listing service, Our list fees start at $449, and may save you $15,000 in real estate commissions. Click here to start saving.

Disclaimer: Listing broker has attempted to offer accurate data, but buyers/lessees are advised to confirm all information IDX information is provided exclusively for consumers' personal, non-commercial use that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that data is deemed reliable but is not guaranteed accurate by the MLS. The MLS may, at its discretion, require use of other disclaimers as necessary to protect Participants and/or the MLS from liability.
This data up-to-date as of 05/04/2025

Williamson County IL FSBO Homes (451)

2200 Brentwood Drive, Williamson County, IL

TBD Country Club Road, Williamson County, IL

814 W 15th Street, Williamson County, IL

405 S Aikman Street, Williamson County, IL

1804 Bridge Street, Williamson County, IL

303 S Greenbriar Road, Williamson County, IL

216 Iowa Street, Williamson County, IL

617 S Calumet Street, Williamson County, IL

604 S 23rd Street, Williamson County, IL

106 Jeremy Drive, Williamson County, IL

11964 Strawberry Road, Williamson County, IL

301 S Pershing Street, Williamson County, IL

600 S Future Street, Williamson County, IL

920 S 12th Street, Williamson County, IL

800 Division Street, Williamson County, IL

1004 E Carter Street, Williamson County, IL

1308 N Glendale Street, Williamson County, IL

510 W Idaho Avenue, Williamson County, IL

0000 Kokopelli Drive, Williamson County, IL

001 Clark Street, Williamson County, IL

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Williamson County - Statistics and Home Trends

Actives Activity Chart

AVERAGE PRICE

NEW LISTINGS THIS WEEK

PRICE PER SQUARE FOOT

AVERAGE PRICE

NEW LISTINGS THIS WEEK

PRICE PER SQUARE FOOT

AVERAGE PRICE

NEW LISTINGS THIS WEEK

PRICE PER SQUARE FOOT

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Learn More About Williamson County, Illinois

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