Zip Code: 21012 (Arnold, 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 21012 Zip Code in February 2026 was 91.103.

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 21012 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: 21012 - Market Hotness: Trend of Supply Score
Zip Code: 21012 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 86.46048109965636
October 2017 70.81545064377683
November 2017 69.72222222222221
December 2017 66.26879153493775
January 2018 64.98228728026201
February 2018 41.28351159883317
March 2018 75.89981056619659
April 2018 88.35099383613823
May 2018 79.80349344978166
June 2018 67.98510935318754
July 2018 47.38167495318654
August 2018 49.16326009197752
September 2018 42.59447121481106
October 2018 72.10281548516842
November 2018 71.55963302752293
December 2018 65.32382420971473
January 2019 55.57825370675453
February 2019 38.10177872398874
March 2019 81.84274333217874
April 2019 85.66236972024136
May 2019 80.6956163819716
June 2019 61.54104753580313
July 2019 79.57538824454492
August 2019 63.36846213895394
September 2019 59.09882034422742
October 2019 57.05525432481281
November 2019 49.537820596276525
December 2019 59.12442702451338
January 2020 61.58783312404075
February 2020 44.18723528552651
March 2020 70.40823832291284
April 2020 88.74870120231557
May 2020 87.57838160644968
June 2020 61.93194621798243
July 2020 68.50978269275384
August 2020 83.45541401273884
September 2020 65.71032684000326
October 2020 92.93141036391079
November 2020 50.1639344262295
December 2020 62.89014283195203
January 2021 71.71058845754227
February 2021 69.82376584561476
May 2021 57.401847575057744
June 2021 78.97609431284795
July 2021 74.09912183304735
August 2021 60.97492251338406
September 2021 55.98543468365954
October 2021 48.350162279120084
November 2021 47.11608442503639
December 2021 48.66001564945227
January 2022 50.41285918749312
April 2022 59.96381493926079
May 2022 54.83380149812734
June 2022 39.19925512104283
July 2022 57.543762156154486
August 2022 77.33914380927968
September 2022 63.721440013489584
October 2022 77.93856308707794
November 2022 76.75851161241988
December 2022 55.15748365735631
January 2023 70.60131649172745
February 2023 64.80398734783859
June 2023 92.31451374519656
September 2023 86.43827105706931
October 2023 67.87759637575861
November 2023 82.69913749365804
December 2023 81.33243151843084
January 2024 98.89644212942527
February 2024 73.438231713028
June 2024 90.83923329304092
July 2024 90.6028660846648
August 2024 93.70230540605671
September 2024 68.46255953775278
October 2024 91.417595082597
November 2024 96.98758240073586
December 2024 73.75356399784235
January 2025 85.22503285151117
February 2025 91.54130490845009
March 2025 95.02028134978856
April 2025 84.22158708809684
May 2025 98.46855653307266
June 2025 98.12620983352691
July 2025 87.77811184606134
August 2025 70.0606329488317
September 2025 86.26497277676951
October 2025 76.47016274864377
November 2025 89.93113446901052
December 2025 95.17585725824216
January 2026 94.29590017825312
February 2026 88.31892721544551
March 2026 91.10326131602727