1 It then divides that by the retail price. 2  For example, if you sell a product for $25, and it costs $20 to make, the gross profit margin is 20% ($5 divided by $25). 3  Net Profit Margin: This is often the equation used to determine an entire organizationâs profit margin.
Avoca, IA (Iowa) Houses and Residents. Total population: 1,506 (Urban population: 0, Rural population: 1,623 (6 farm, 1,617 nonfarm)) Houses: 710 (665 occupied: 454 owner occupied, 162 renter occupied) Housing density: 366 houses/condos per square mile.
3. Demographics â Population and Housing 3.1 Population Polk County is the most populated county in Iowa, with an estimated 2003 population of 388,180 (State Data Center), or about 13% of the Stateâs estimated total population. Slightly over half of the Countyâs population resides in Des Moines (196,021), with most of the remaining residents living in the suburban or exurban cities in the County.