Montgomery - Town vs. County Stats. Avg Price in Montgomery: $992,500 / County Avg $446,900. Avg Sq. Ft. in Montgomery: 3,413 / County Avg 1,869. Avg Price per/sqft in Montgomery:$291 / County Avg $239. Avg Year Built in Montgomery: 1974 / County Avg 1948. Avg Days on Website in Montgomery: 98 / County Avg 93. Montgomery Real Estate Market Health.