Zip Code: 21046 (Columbia, MD) - Market Hotness: Trend of Supply Score (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the market hotness: supply score for the 21046 Zip Code in November 2025 was 99.031.

You can see similar for other Maryland Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 21046 zip code.

Note: Supply Score is an index representing the metro's median days on market ranking compared to other metros.

Data Source: Realtor.
Zip Code: 21046 - Market Hotness: Trend of Supply Score
Zip Code: 21046 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 94.49547016557325
October 2017 92.89046463892518
November 2017 77.3989898989899
December 2017 89.70256145557778
January 2018 91.61820733908161
February 2018 95.58966523128211
April 2018 99.4805734469146
May 2018 90.09279475982532
June 2018 93.3523898158612
July 2018 86.36275585975334
August 2018 77.19724067450178
September 2018 71.72203905655591
October 2018 83.57843137254902
November 2018 94.12844036697248
December 2018 93.34361346697507
January 2019 91.72322899505765
February 2019 76.90405878717121
March 2019 84.60685833044683
April 2019 92.63576522216127
May 2019 95.9250874665569
June 2019 96.86008202783567
July 2019 98.93191796081516
August 2019 97.14415820973198
September 2019 93.75362599110424
October 2019 94.82313452104312
November 2019 94.79234474677777
December 2019 95.55570318208994
January 2020 87.3098925631366
April 2020 99.14650437880363
May 2020 96.70797252911318
June 2020 99.65447307143394
July 2020 98.84773026061403
August 2021 69.85066215835447
October 2021 86.25135232600071
November 2021 82.37809315866085
September 2022 98.46555939634095
November 2022 95.1219512195122
June 2025 99.96128532713898
July 2025 99.0829825616356
September 2025 99.90562613430127
October 2025 99.44303797468355
November 2025 98.54295034432765
December 2025 99.03076584183862