Zip Code: 18103 (Allentown, PA) - 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 18103 Zip Code in February 2026 was 94.414.

You can see similar for other Pennsylvania Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 18103 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: 18103 - Market Hotness: Trend of Supply Score
Zip Code: 18103 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 69.01593252108717
October 2017 68.7628288859862
November 2017 64.02146464646464
December 2017 80.50841989805794
January 2018 76.78631107546286
February 2018 69.3638005278511
March 2018 51.455833859538345
April 2018 67.04757947226263
May 2018 87.34306768558952
June 2018 89.61643289237519
July 2018 81.62329695873959
August 2018 83.37378640776699
September 2018 76.45194014709612
October 2018 87.78908999497234
November 2018 80.52515026890225
December 2018 75.68105885376511
January 2019 74.82042833607908
February 2019 71.69150470434722
March 2019 72.29650155871147
April 2019 79.7654964344487
May 2019 82.76051313713384
June 2019 86.14267464533046
July 2019 70.61136229604875
August 2019 67.82461618527192
September 2019 78.97892090504737
October 2019 92.00232378001549
November 2019 94.64262465824763
December 2019 79.83790606523617
January 2020 80.24975582531046
February 2020 90.34613699430408
March 2020 74.86575947039353
April 2020 90.09945079412202
May 2020 60.24186324275903
June 2020 45.158867272590705
July 2020 98.84773026061403
August 2020 99.07643312101911
September 2020 94.64504034558644
October 2020 83.73302029179943
November 2020 96.45229087852039
December 2020 92.5850819961206
January 2021 68.8202512515349
February 2021 91.78604555292178
March 2021 87.88189694482445
April 2021 96.50756693830034
May 2021 88.57967667436489
June 2021 90.51413601135248
July 2021 96.0633895225598
August 2021 96.6281581666197
September 2021 84.67000455166136
October 2021 94.30219978362784
November 2021 91.54839883551674
December 2021 75.18583724569639
January 2022 61.136188483981066
February 2022 99.58919457238889
March 2022 88.884430176565
April 2022 98.20367019901784
May 2022 98.13904494382022
June 2022 97.52741568384027
July 2022 98.16615726590719
August 2022 99.3933179526617
September 2022 95.76764185144592
October 2022 99.12837437589913
November 2022 99.17589278281861
December 2022 88.53892520587486
January 2023 95.2054794520548
February 2023 77.85871753091152
March 2023 99.33774834437085
April 2023 93.13423645320196
May 2023 99.26270073729926
June 2023 97.58596906099123
July 2023 96.40599943401565
August 2023 99.5830689748935
September 2023 97.5059909470134
October 2023 99.82904521753996
November 2023 99.02756637916455
December 2023 97.19310111599594
January 2024 92.82245960978194
February 2024 85.65140020605038
March 2024 97.46871716496322
April 2024 94.10340009315323
May 2024 97.64833574529666
June 2024 98.61854601968571
July 2024 99.76115961126668
August 2024 99.39754197124267
September 2024 98.89903958772547
October 2024 89.28159815597387
November 2024 97.7311053196382
December 2024 97.57262849657086
January 2025 96.77233902759527
February 2025 98.89968193931058
March 2025 71.98584620695607
April 2025 69.4855413584398
May 2025 84.8892147279244
June 2025 98.12620983352691
July 2025 83.95219482862298
August 2025 94.97190180419994
September 2025 93.502722323049
October 2025 90.74141048824593
November 2025 75.95505617977528
December 2025 95.6751597033556
January 2026 85.69324963186857
February 2026 94.60376443977704
March 2026 94.41386675429229