Zip Code: 18104 (Allentown, PA) - Market Hotness: Trend of Hotness Rank (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the hotness rank for the 18104 Zip Code in February 2026 was 100. The year over year change (YoY) was -87.

You can see similar for other Pennsylvania Zip Codes.

The chart below shows the trend of the hotness rank for the 18104 zip code. The table below shows the trend, and the YoY changes.

Note: Hotness rank refers to the rank by hotness score. A rank value of 1 is considered the hottest (highest Hotness score).

Data Source: Realtor.
Zip Code: 18104 - Market Hotness: Trend of Hotness Rank
Zip Code: 18104 - Market Hotness: Trend of Hotness Rank
Items per page:
1 – 10 of 103
Month Hotness Rank YoY Change
September 2017 2731
October 2017 2722
November 2017 2913
December 2017 3894
January 2018 5332
February 2018 6210
March 2018 4668
April 2018 2103
May 2018 2469
June 2018 3368
July 2018 3634
August 2018 1857
September 2018 3738 1,007
October 2018 5069 2,347
November 2018 5949 3,036
December 2018 2473 -1,421
January 2019 2714 -2,618
February 2019 4159 -2,051
March 2019 2441 -2,227
April 2019 3006 903
May 2019 2227 -242
June 2019 2310 -1,058
July 2019 1706 -1,928
August 2019 2194 337
September 2019 2849 -889
October 2019 1905 -3,164
November 2019 1533 -4,416
December 2019 1368 -1,105
January 2020 1851 -863
February 2020 812 -3,347
March 2020 764 -1,677
April 2020 232 -2,774
May 2020 2639 412
June 2020 3000 690
July 2020 93 -1,613
August 2020 513 -1,681
September 2020 219 -2,630
October 2020 1348 -557
November 2020 314 -1,219
December 2020 270 -1,098
January 2021 439 -1,412
February 2021 1127 315
March 2021 1286 522
April 2021 86 -146
May 2021 223 -2,416
June 2021 329 -2,671
July 2021 605 512
August 2021 947 434
September 2021 2606 2,387
October 2021 498 -850
November 2021 183 -131
December 2021 101 -169
January 2022 74 -365
February 2022 112 -1,015
March 2022 55 -1,231
April 2022 76 -10
May 2022 156 -67
June 2022 186 -143
July 2022 299 -306
August 2022 356 -591
September 2022 221 -2,385
October 2022 480 -18
November 2022 226 43
December 2022 211 110
January 2023 1286 1,212
February 2023 483 371
March 2023 136 81
April 2023 320 244
May 2023 70 -86
June 2023 60 -126
July 2023 44 -255
August 2023 103 -253
September 2023 153 -68
October 2023 66 -414
November 2023 421 195
December 2023 306 95
January 2024 129 -1,157
February 2024 135 -348
March 2024 217 81
April 2024 267 -53
May 2024 132 62
June 2024 179 119
July 2024 568 524
August 2024 607 504
September 2024 379 226
October 2024 552 486
November 2024 691 270
December 2024 1056 750
January 2025 1216 1,087
February 2025 668 533
March 2025 187 -30
April 2025 45 -222
May 2025 129 -3
June 2025 124 -55
July 2025 78 -490
August 2025 308 -299
September 2025 314 -65
October 2025 377 -175
November 2025 752 61
December 2025 1286 230
January 2026 199 -1,017
February 2026 454 -214
March 2026 100 -87