Zip Code: 18104 (Allentown, PA) - Trend of Active Listing Count of Houses (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the active listing count of houses in the 18104 Zip Code in February 2026 was 30. The month over month percentage change (MoM) was -0.1667%, and the year over year percentage change (YoY) was -0.2105%.

You can see similar for other Pennsylvania Zip Codes, and for Pennsylvania.

The chart below shows the trend of active listing count in the 18104 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 18104 - Trend of Active Listing Count of Houses
Zip Code: 18104 Trend of Active Listing Count of Houses
Items per page:
1 – 10 of 116
Month Active Listing Count MoM Perc. Change (%) YoY Perc. Change (%)
Aug 2016 176
Sep 2016 197
Oct 2016 188
Nov 2016 168
Dec 2016 151
Jan 2017 143
Feb 2017 130
Mar 2017 114
Apr 2017 116
May 2017 121
Jun 2017 142
Jul 2017 140
Aug 2017 136 -0.0251 -0.2273
Sep 2017 139 0.0221 -0.2944
Oct 2017 151 0.0863 -0.1968
Nov 2017 145 -0.0397 -0.1369
Dec 2017 131 -0.0966 -0.1296
Jan 2018 123 -0.0611 -0.1399
Feb 2018 92 -0.252 -0.2896
Mar 2018 89 -0.0326 -0.2159
Apr 2018 89 0.0 -0.2294
May 2018 102 0.1404 -0.1612
Jun 2018 117 0.1527 -0.1761
Jul 2018 116 -0.0085 -0.1685
Aug 2018 129 0.1078 -0.0551
Sep 2018 141 0.0973 0.0144
Oct 2018 133 -0.0567 -0.1192
Nov 2018 129 -0.0301 -0.1103
Dec 2018 119 -0.0775 -0.0916
Jan 2019 116 -0.0252 -0.0569
Feb 2019 103 -0.1164 0.1141
Mar 2019 100 -0.0244 0.1236
Apr 2019 103 0.03 0.1573
May 2019 121 0.1699 0.1872
Jun 2019 130 0.0788 0.1111
Jul 2019 133 0.0231 0.1466
Aug 2019 141 0.0602 0.0973
Sep 2019 140 -0.0071 -0.0071
Oct 2019 140 0.0 0.0526
Nov 2019 140 -0.0036 0.0814
Dec 2019 105 -0.2473 -0.1176
Jan 2020 101 -0.0429 -0.1336
Feb 2020 80 -0.209 -0.2244
Mar 2020 64 -0.195 -0.36
Apr 2020 72 0.1172 -0.3058
May 2020 58 -0.1958 -0.5228
Jun 2020 62 0.0783 -0.5231
Jul 2020 71 0.1452 -0.4662
Aug 2020 55 -0.2254 -0.6099
Sep 2020 56 0.0182 -0.6
Oct 2020 49 -0.1339 -0.6536
Nov 2020 56 0.1546 -0.5986
Dec 2020 59 0.0446 -0.4429
Jan 2021 64 0.0855 -0.3682
Feb 2021 41 -0.3543 -0.4843
Mar 2021 33 -0.2073 -0.4922
Apr 2021 35 0.0769 -0.5105
May 2021 36 0.0286 -0.3739
Jun 2021 48 0.3333 -0.2258
Jul 2021 58 0.2083 -0.1831
Aug 2021 66 0.1379 0.2
Sep 2021 52 -0.2121 -0.0714
Oct 2021 50 -0.0385 0.0309
Nov 2021 43 -0.14 -0.2321
Dec 2021 38 -0.1163 -0.3504
Jan 2022 32 -0.1711 -0.5039
Feb 2022 29 -0.0794 -0.2927
Mar 2022 31 0.0517 -0.0615
Apr 2022 25 -0.1967 -0.3
May 2022 31 0.2653 -0.1389
Jun 2022 39 0.2581 -0.1875
Jul 2022 48 0.2308 -0.1724
Aug 2022 50 0.0417 -0.2424
Sep 2022 53 0.06 0.0192
Oct 2022 50 -0.066 -0.01
Nov 2022 51 0.0303 0.186
Dec 2022 55 0.0784 0.4474
Jan 2023 36 -0.3455 0.1429
Feb 2023 28 -0.2222 -0.0345
Mar 2023 30 0.0536 -0.0328
Apr 2023 28 -0.0508 0.1429
May 2023 28 0.0 -0.0968
Jun 2023 26 -0.0893 -0.3462
Jul 2023 32 0.2353 -0.3438
Aug 2023 35 0.1111 -0.3
Sep 2023 38 0.0857 -0.283
Oct 2023 42 0.1053 -0.1515
Nov 2023 44 0.0476 -0.1373
Dec 2023 40 -0.1023 -0.2818
Jan 2024 38 -0.038 0.0556
Feb 2024 37 -0.0395 0.3036
Mar 2024 29 -0.2192 -0.0339
Apr 2024 29 0.0175 0.0357
May 2024 36 0.2241 0.2679
Jun 2024 47 0.3239 0.8431
Jul 2024 48 0.0213 0.5238
Aug 2024 57 0.1771 0.6143
Sep 2024 60 0.0619 0.5789
Oct 2024 60 0.0 0.4286
Nov 2024 63 0.05 0.4318
Dec 2024 56 -0.1111 0.4177
Jan 2025 44 -0.2143 0.1579
Feb 2025 36 -0.1818 -0.0137
Mar 2025 38 0.0556 0.3333
Apr 2025 33 -0.1316 0.1379
May 2025 31 -0.0758 -0.1408
Jun 2025 38 0.2459 -0.1915
Jul 2025 42 0.1053 -0.125
Aug 2025 40 -0.0476 -0.292
Sep 2025 46 0.15 -0.2333
Oct 2025 50 0.087 -0.1667
Nov 2025 57 0.13 -0.1032
Dec 2025 48 -0.1504 -0.1429
Jan 2026 40 -0.1667 -0.0909
Feb 2026 36 -0.1 0.0
Mar 2026 30 -0.1667 -0.2105