0.7% of residents speak other language at home (87% very well, 4% well, 9% not well). 1.2% of residents speak Spanish at home (86% very well, 12% well, 1% not well). The location Kirkwood, MO has 1 differents ZIP Codes. We proudly serve residential and commercial customers throughout St. Louis County. Compare speeds, prices, coverage and verified reviews for the best internet service providers in Kirkwood, MO: Spectrum, AT&T Internet, and Brown Dog. Don't get caught with broken pipes this winter! Find MoreCities in Missouri that start with K, Post Office Address:343 S KIRKWOOD RD STE 5, Post Office Suburb:SAINT LOUIS, MO, 63122-9997,