Homes for Sale Under 100K in Boulder County, CO

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Based on information submitted to the MLS GRID as of Oct 9, 2026, 2:30 PM. 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. ©2026 REcolorado®, Inc. All Rights Reserved.