Zip Code: 63021 (Ballwin, MO) - 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 63021 Zip Code in February 2026 was 81.623.

You can see similar for other Missouri Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 63021 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: 63021 - Market Hotness: Trend of Supply Score
Zip Code: 63021 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 84.0112464854733
October 2017 74.17428624743422
November 2017 88.77525252525253
December 2017 85.74746757855345
January 2018 88.81090836174053
February 2018 90.70009723572718
March 2018 83.90514277695924
April 2018 83.48223561188448
May 2018 84.76391921397381
June 2018 77.42471581466462
July 2018 77.7942790727707
August 2018 71.078180889116
September 2018 64.04387522191224
October 2018 69.18677727501257
November 2018 74.34356216387219
December 2018 70.2390131071704
January 2019 59.09060955518945
February 2019 59.87226152049997
March 2019 52.47661932802217
April 2019 59.59270433351618
May 2019 81.23756602867532
June 2019 82.2698850265582
July 2019 71.98741891094947
August 2019 75.23419203747072
September 2019 77.1933217301618
October 2019 82.95249160857216
November 2019 85.71800546803802
December 2019 61.90128213645121
January 2020 41.453885865773685
February 2020 33.481816854096685
March 2020 80.82383229128357
April 2020 90.80451239424076
May 2020 84.06240668856375
June 2020 68.60211823030122
July 2020 86.93836516897379
August 2020 77.57961783439491
September 2020 69.8100904719211
October 2020 60.65738722119738
November 2020 73.55191256830601
December 2020 52.50396755422324
January 2021 29.772362331160856
February 2021 55.621972585798204
March 2021 56.83994528043775
April 2021 93.63213038416764
May 2021 54.84988452655889
June 2021 72.47025433904597
July 2021 72.67588573735743
August 2021 82.16398985629755
September 2021 83.3318161128812
October 2021 72.8092318788316
November 2021 64.99272197962155
December 2021 71.87010954616588
January 2022 63.52526698227457
February 2022 68.69164695630523
March 2022 65.78384162653825
April 2022 76.60894287929698
May 2022 41.175093632958806
June 2022 94.45478998551624
July 2022 77.74381772714642
August 2022 96.94095531060411
September 2022 91.46783576426945
October 2022 84.77616992468478
November 2022 84.1921251977025
December 2022 95.5514050428729
January 2023 95.3922789539228
February 2023 99.69328093549315
March 2023 97.54164158137668
April 2023 94.60180623973727
May 2023 85.21361478638522
June 2023 96.37402699773376
July 2023 88.55768323743042
August 2023 86.50412399166137
September 2023 96.61844324132423
October 2023 96.90571843747328
November 2023 93.20987654320987
December 2023 91.90057490700035
January 2024 98.04008122185928
February 2024 98.95101620305329
March 2024 97.1152927691279
April 2024 99.44108057755007
May 2024 98.20007235890014
June 2024 96.98670350543948
July 2024 96.985669576676
August 2024 98.5139368623986
September 2024 96.0724603732334
October 2024 97.49519784863618
November 2024 89.28407174612907
December 2024 83.87146489943747
January 2025 95.06406044678056
February 2025 97.85094128771597
March 2025 99.68930698196255
April 2025 97.21755211835911
May 2025 98.16715542521995
June 2025 93.83662408052652
July 2025 93.91160553217077
August 2025 94.23986986098787
September 2025 86.26497277676951
October 2025 96.4629294755877
November 2025 88.56832185574484
December 2025 47.631984727219326
January 2026 76.5945904053321
February 2026 68.76969060505695
March 2026 81.62326460198801