Zip Code: 18103 (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 18103 Zip Code in February 2026 was 28. The month over month percentage change (MoM) was -0.0345%, and the year over year percentage change (YoY) was -0.2533%.

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

The chart below shows the trend of active listing count in the 18103 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 18103 - Trend of Active Listing Count of Houses
Zip Code: 18103 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 162
Sep 2016 165
Oct 2016 163
Nov 2016 164
Dec 2016 147
Jan 2017 131
Feb 2017 109
Mar 2017 92
Apr 2017 90
May 2017 87
Jun 2017 93
Jul 2017 109
Aug 2017 114 0.0459 -0.2963
Sep 2017 113 -0.0132 -0.3161
Oct 2017 111 -0.0133 -0.319
Nov 2017 110 -0.009 -0.3293
Dec 2017 113 0.0227 -0.2321
Jan 2018 97 -0.1378 -0.2595
Feb 2018 88 -0.0928 -0.1927
Mar 2018 76 -0.142 -0.1749
Apr 2018 72 -0.0464 -0.2
May 2018 64 -0.1181 -0.2701
Jun 2018 82 0.2835 -0.1237
Jul 2018 80 -0.0184 -0.2661
Aug 2018 84 0.0438 -0.2675
Sep 2018 94 0.1257 -0.1644
Oct 2018 118 0.2553 0.0631
Nov 2018 127 0.0763 0.1545
Dec 2018 122 -0.0433 0.08
Jan 2019 106 -0.1276 0.0928
Feb 2019 89 -0.1604 0.0114
Mar 2019 78 -0.1236 0.0331
Apr 2019 84 0.0769 0.1667
May 2019 96 0.1429 0.5118
Jun 2019 107 0.1094 0.3067
Jul 2019 104 -0.0235 0.3
Aug 2019 98 -0.0625 0.1677
Sep 2019 108 0.1077 0.1489
Oct 2019 122 0.125 0.0297
Nov 2019 129 0.0576 0.0118
Dec 2019 111 -0.1362 -0.0864
Jan 2020 86 -0.2252 -0.1887
Feb 2020 80 -0.0756 -0.1067
Mar 2020 66 -0.1698 -0.1538
Apr 2020 66 -0.0076 -0.2202
May 2020 53 -0.1908 -0.4479
Jun 2020 51 -0.0377 -0.5211
Jul 2020 49 -0.049 -0.5337
Aug 2020 46 -0.0515 -0.5282
Sep 2020 43 -0.0652 -0.6019
Oct 2020 47 0.0814 -0.6173
Nov 2020 47 0.0108 -0.6342
Dec 2020 47 0.0 -0.5766
Jan 2021 36 -0.234 -0.5814
Feb 2021 34 -0.0556 -0.5723
Mar 2021 28 -0.1765 -0.5758
Apr 2021 32 0.125 -0.5191
May 2021 31 -0.0159 -0.4151
Jun 2021 31 0.0 -0.3922
Jul 2021 41 0.3065 -0.1649
Aug 2021 49 0.2099 0.0652
Sep 2021 47 -0.0408 0.093
Oct 2021 43 -0.0851 -0.0753
Nov 2021 40 -0.0698 -0.1489
Dec 2021 34 -0.15 -0.2766
Jan 2022 28 -0.1765 -0.2222
Feb 2022 27 -0.0357 -0.2059
Mar 2022 25 -0.0926 -0.125
Apr 2022 26 0.0408 -0.1905
May 2022 27 0.0588 -0.129
Jun 2022 35 0.2963 0.129
Jul 2022 30 -0.1429 -0.2593
Aug 2022 47 0.5667 -0.0408
Sep 2022 43 -0.0851 -0.0851
Oct 2022 44 0.0116 0.0116
Nov 2022 45 0.0345 0.125
Dec 2022 42 -0.0778 0.2206
Jan 2023 45 0.0843 0.6071
Feb 2023 31 -0.3222 0.1296
Mar 2023 33 0.0656 0.3265
Apr 2023 27 -0.1692 0.0588
May 2023 27 0.0 0.0
Jun 2023 24 -0.1111 -0.3143
Jul 2023 21 -0.125 -0.3
Aug 2023 23 0.0952 -0.5106
Sep 2023 28 0.2174 -0.3488
Oct 2023 27 -0.0357 -0.3793
Nov 2023 32 0.1852 -0.2889
Dec 2023 34 0.0625 -0.1807
Jan 2024 30 -0.1176 -0.3333
Feb 2024 27 -0.1167 -0.1311
Mar 2024 33 0.2264 0.0
Apr 2024 35 0.0769 0.2963
May 2024 33 -0.0714 0.2037
Jun 2024 25 -0.2462 0.0208
Jul 2024 32 0.3061 0.5238
Aug 2024 49 0.5313 1.1304
Sep 2024 58 0.1837 1.0714
Oct 2024 44 -0.2414 0.6296
Nov 2024 51 0.1591 0.5938
Dec 2024 45 -0.1176 0.3235
Jan 2025 47 0.0444 0.5667
Feb 2025 45 -0.0532 0.6792
Mar 2025 38 -0.1573 0.1538
Apr 2025 38 0.0133 0.0857
May 2025 36 -0.0526 0.1077
Jun 2025 38 0.0556 0.551
Jul 2025 41 0.0658 0.2656
Aug 2025 48 0.1852 -0.0204
Sep 2025 49 0.0208 -0.1552
Oct 2025 48 -0.0306 0.0795
Nov 2025 42 -0.1158 -0.1765
Dec 2025 49 0.1667 0.0889
Jan 2026 35 -0.2857 -0.2553
Feb 2026 29 -0.1714 -0.3483
Mar 2026 28 -0.0345 -0.2533