Zip Code: 91001 (Altadena, CA) - Market Hotness: Trend of Hotness Rank (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the hotness rank for the 91001 Zip Code in February 2026 was 4,330. The year over year change (YoY) was 2,700.

You can see similar for other California Zip Codes.

The chart below shows the trend of the hotness rank for the 91001 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: 91001 - Market Hotness: Trend of Hotness Rank
Zip Code: 91001 - Market Hotness: Trend of Hotness Rank
Items per page:
1 – 10 of 103
Month Hotness Rank YoY Change
September 2017 755
October 2017 678
November 2017 1096
December 2017 1291
January 2018 400
February 2018 919
March 2018 1117
April 2018 1820
May 2018 1225
June 2018 1147
July 2018 1249
August 2018 2474
September 2018 2981 2,226
October 2018 1924 1,246
November 2018 2657 1,561
December 2018 2191 900
January 2019 2042 1,642
February 2019 1744 825
March 2019 1801 684
April 2019 2791 971
May 2019 3313 2,088
June 2019 3074 1,927
July 2019 1970 721
August 2019 2755 281
September 2019 2016 -965
October 2019 1817 -107
November 2019 1734 -923
December 2019 1399 -792
January 2020 2991 949
February 2020 1360 -384
March 2020 2304 503
April 2020 3907 1,116
May 2020 5246 1,933
June 2020 5326 2,252
July 2020 2968 998
August 2020 3208 453
September 2020 6084 4,068
October 2020 2818 1,001
November 2020 3679 1,945
December 2020 2497 1,098
January 2021 3221 230
February 2021 1716 356
March 2021 1248 -1,056
April 2021 1480 -2,427
May 2021 5267 21
June 2021 6317 991
July 2021 6935 3,967
August 2021 7723 4,515
September 2021 5821 -263
October 2021 4782 1,964
November 2021 5874 2,195
December 2021 5615 3,118
January 2022 3681 460
February 2022 3669 1,953
March 2022 1710 462
April 2022 3579 2,099
May 2022 5927 660
June 2022 4679 -1,638
July 2022 4128 -2,807
August 2022 5863 -1,860
September 2022 4979 -842
October 2022 4910 128
November 2022 6181 307
December 2022 4964 -651
January 2023 3133 -548
February 2023 2863 -806
March 2023 1117 -593
April 2023 2228 -1,351
May 2023 5316 -611
June 2023 3328 -1,351
July 2023 3660 -468
August 2023 4619 -1,244
September 2023 6731 1,752
October 2023 2215 -2,695
November 2023 4406 -1,775
December 2023 5283 319
January 2024 6122 2,989
February 2024 3601 738
March 2024 1973 856
April 2024 3001 773
May 2024 3263 -2,053
June 2024 2280 -1,048
July 2024 4261 601
August 2024 5428 809
September 2024 4869 -1,862
October 2024 5367 3,152
November 2024 4657 251
December 2024 3013 -2,270
January 2025 3350 -2,772
February 2025 2699 -902
March 2025 1630 -343
April 2025 3185 184
May 2025 5579 2,316
June 2025 8090 5,810
July 2025 10978 6,717
August 2025 11651 6,223
September 2025 11890 7,021
October 2025 6122 755
November 2025 5902 1,245
December 2025 7446 4,433
January 2026 6942 3,592
February 2026 4797 2,098
March 2026 4330 2,700