The Knolls - Unclaimed

ZIP code 92021 covers Bostonia, Granite Hills, Harbison Canyon, Crest and Blossom Valley, stretching from El Cajon’s developed eastern edge into foothill and canyon terrain. The inland setting brings hot, dry summers and mild winters. Outdoor options include the trails and open space around Crestridge Ecological Reserve, while neighborhood streets and local parks offer more everyday places to walk and play. Shops and restaurants cluster along major roads, with El Cajon’s broader dining and retail options nearby; coffee shops and casual eateries are part of the local mix. The area’s history is tied to the growth of El Cajon and its surrounding rural communities. Driving is the most practical way to get between its spread-out neighborhoods, with regional bus service offering another option. For ZIP code 92021, the median rent is $2,160 per month, with a typical range of $950 to $21,123.