These lots are in a prime location for investors/builders looking to develop quality cash flowable townhouse units. Parcel 10 is zoned to build 6 townhouse units. Current Townhouse Rent: $1250 monthly w/ yearly increases. (Stats): Between 2016 and 2017 the population of Grimes, IA grew from 10,422 to 11,139, a 6.88% increase and its median household income grew from $83,125 to $92,250, a 11% increase. Between 2018 and 2019 the city of Grimes is showing steady increases.