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Homes for Sale Under 400K in Williamson County, IL

121 Homes for Sale

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Price CutPrice Drop: $19K
Photo 3 of Single family home for sale at 6241 Wards Ml Rd, Marion, IL 62959 | MLS# 12651607 | Listing updated on 2026-10-04Photo 1 of Single family home for sale at 6241 Wards Ml Rd, Marion, IL 62959 | MLS# 12651607 | Listing updated on 2026-10-04Photo 2 of Single family home for sale at 6241 Wards Ml Rd, Marion, IL 62959 | MLS# 12651607 | Listing updated on 2026-10-04

$380,000

Views: 6

Bedrooms: 4Bds

Bathrooms: 3Ba

Area: 2,892sqft

Single family home for sale

6241 Wards Ml Rd, Marion, IL 62959

MLS ID #12651607, C21 House Of Realty, Inc. C

Price CutPrice Drop: $4K
Open House
Photo 3 of Single family home for sale at 1304 Main St, Carterville, IL 62918 | MLS# 12747845 | Listing updated on 2026-10-24Photo 1 of Single family home for sale at 1304 Main St, Carterville, IL 62918 | MLS# 12747845 | Listing updated on 2026-10-24Photo 2 of Single family home for sale at 1304 Main St, Carterville, IL 62918 | MLS# 12747845 | Listing updated on 2026-10-24

$260,000

Views: 4

Bedrooms: 3Bds

Bathrooms: 2Ba

Area: 1,425sqft

Single family home for sale

1304 Main St, Carterville, IL 62918

MLS ID #12747845, Paul Wilson Realty

Price CutPrice Drop: $600
Photo 3 of Single family home for sale at 1112 Line Dr, Carterville, IL 62918 | MLS# 12769196 | Listing updated on 2026-10-18Photo 1 of Single family home for sale at 1112 Line Dr, Carterville, IL 62918 | MLS# 12769196 | Listing updated on 2026-10-18Photo 2 of Single family home for sale at 1112 Line Dr, Carterville, IL 62918 | MLS# 12769196 | Listing updated on 2026-10-18

$249,900

Views: 7

Bedrooms: 3Bds

Bathrooms: 2Ba

Area: 1,568sqft

Single family home for sale

1112 Line Dr, Carterville, IL 62918

MLS ID #12769196, Legacy Land & Homes Of Illinoi

Price CutPrice Drop: $2.6K
Photo 3 of Single family home for sale at 1406 N Glendale St, Marion, IL 62959 | MLS# 12692718 | Listing updated on 2026-10-26Photo 1 of Single family home for sale at 1406 N Glendale St, Marion, IL 62959 | MLS# 12692718 | Listing updated on 2026-10-26Photo 2 of Single family home for sale at 1406 N Glendale St, Marion, IL 62959 | MLS# 12692718 | Listing updated on 2026-10-26

$239,900

Views: 3

Bedrooms: 4Bds

Bathrooms: 2Ba

Area: 1,920sqft

Single family home for sale

1406 N Glendale St, Marion, IL 62959

MLS ID #12692718, Exit Realty New Beginningz

Photo 3 of Single family home for sale at 309 Walnut St W, Energy, IL 62933 | MLS# 12778916 | Listing updated on 2026-10-16Photo 1 of Single family home for sale at 309 Walnut St W, Energy, IL 62933 | MLS# 12778916 | Listing updated on 2026-10-16Photo 2 of Single family home for sale at 309 Walnut St W, Energy, IL 62933 | MLS# 12778916 | Listing updated on 2026-10-16

$224,900

Views: 2

Bedrooms: 3Bds

Bathrooms: 2Ba

Area: 1,512sqft

Single family home for sale

309 Walnut St W, Energy, IL 62933

MLS ID #12778916, Legacy Land & Homes Of Illinoi

Price CutPrice Drop: $10.09K
3D Tour3D Tour
Photo 3 of Single family home for sale at 1302 Susan Ln, Carterville, IL 62918 | MLS# 12718665 | Listing updated on 2026-10-24Photo 1 of Single family home for sale at 1302 Susan Ln, Carterville, IL 62918 | MLS# 12718665 | Listing updated on 2026-10-24Photo 2 of Single family home for sale at 1302 Susan Ln, Carterville, IL 62918 | MLS# 12718665 | Listing updated on 2026-10-24

$199,900

Views: 5

Bedrooms: 5Bds

Bathrooms: 3Ba

Area: 1,646sqft

Single family home for sale

1302 Susan Ln, Carterville, IL 62918

MLS ID #12718665, Infinity Realty Of Southern Il

Showing 1 - 42 of 121 homes for sale in Williamson County, IL

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    This representation is based in whole or in part on data supplied by Midwest Real Estate Data, LLC through Oct 29, 2026, 6:30 AM. Midwest Real Estate Data, LLC does not guarantee nor is it in any way responsible for its accuracy. Data maintained by Midwest Real Estate Data LLC may not reflect all real estate activity in the market.

    Based on information submitted to the MLS GRID as of Oct 29, 2026, 6:30 AM. All data is obtained from various sources and has not been, and will not be, verified by broker or MLS GRID. Supplied Open House information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. This website may not include listings or property addresses of sellers who have directed their listing brokers to withhold their listing or their property address from display on the Internet. Some IDX listings have been excluded from this website. Information is provided exclusively for consumers’ personal non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID, MRED or Houzeo. The use of the MLS GRID Data may be subject to an end user license agreement. Properties displayed may be listed or sold by various participants in the MLS,

    Listings courtesy of MRED as distributed by MLS GRID. ©2026 Midwest Real Estate Data LLC. All Rights Reserved
  • mls-imgIDX Logo
    Based on information from Mid America Regional Information Systems, Inc. through Oct 29, 2026, 6:31 AM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Properties displayed may be listed or sold by various participants in the MLS. Property data presented reflect information otherwise available from public records. The REALTOR® providing this information may not have represented the buyer or seller in some or all of the transactions.
    IDX information is provided exclusively for consumers’ personal noncommercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, that the data is deemed reliable but is not guaranteed by MLS GRID, and that the use of the MLS GRID Data may be subject to an end user license agreement prescribed by the Member Participant’s applicable MLS if any and as amended from time to time. © 2026 Mid America Regional Information Systems, Inc. All Rights Reserved.
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