Zip Code: 18020 (Bethlehem, 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 18020 Zip Code in February 2026 was 74.115.

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 18020 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: 18020 - Market Hotness: Trend of Supply Score
Zip Code: 18020 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 72.63980006248048
October 2017 70.81545064377683
November 2017 81.12373737373737
December 2017 78.19214142847926
January 2018 77.88249448566272
February 2018 78.70537574663147
March 2018 94.274889496948
April 2018 72.41498718747835
May 2018 71.89546943231441
June 2018 66.8483680116998
July 2018 69.54865370956286
August 2018 64.52478283086357
September 2018 49.708343900583316
October 2018 85.97913524384113
November 2018 63.581145207212906
December 2018 52.383705988177844
January 2019 62.70840197693575
February 2019 37.2707918412197
March 2019 30.897125043297542
April 2019 52.48902907295666
May 2019 56.4588049667284
June 2019 67.82760707321994
July 2019 70.26407181705
August 2019 67.12204007285975
September 2019 60.87152710629794
October 2019 67.37671056028918
November 2019 69.88673349824242
December 2019 83.51159237361323
January 2020 55.88809822798939
February 2020 56.00262888856433
March 2020 55.02758367046708
April 2020 57.43654445598931
May 2020 20.26724395341893
June 2020 23.300533313302786
July 2020 98.18266182043152
August 2020 99.22770700636943
September 2020 74.42334338576902
October 2020 97.04846553748114
November 2020 96.08238755779739
December 2020 91.13912890142832
April 2021 97.45052386495927
May 2021 74.28406466512702
June 2021 93.81071935378233
July 2021 83.58736247098012
August 2021 97.06020475251245
September 2021 96.45880746472463
October 2021 52.4792643346556
November 2021 91.83042212518195
December 2021 77.31807511737088
January 2022 57.95442034570076
February 2022 83.96613967384539
March 2022 75.65543071161048
April 2022 48.99198759369346
May 2022 83.59082397003745
June 2022 75.16035588661288
July 2022 70.02871167917014
August 2022 92.924891053576
September 2022 98.35595649607959
October 2022 91.78302445629178
November 2022 93.71514192957629
December 2022 96.79938874267765
January 2023 90.31311154598825
February 2023 73.67967027700566
March 2023 47.65201685731487
June 2023 98.71908562419944
July 2023 99.6509763229884
August 2023 98.7310794888063
September 2023 94.42620040827194
November 2023 99.52646710637578
December 2023 99.26445722015556
January 2024 93.7847620729231
February 2024 86.39130841996815
March 2024 90.45754131244627
June 2024 99.29200483508893
July 2024 97.52100148245758
August 2024 99.89557394168206
September 2024 96.0724603732334
October 2024 96.82673837879369
November 2024 96.00643875517399
December 2024 91.96270324420128
January 2025 73.29172141918528
May 2025 95.9188660801564
June 2025 99.68253968253968
July 2025 98.78983764281419
August 2025 85.9952676722863
September 2025 93.502722323049
October 2025 94.18444846292947
November 2025 93.76585719463574
December 2025 88.03876936632645
January 2026 74.84305975354569
February 2026 97.85119961224655
March 2026 74.11484432761029