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Exhibit 13: Average Household Size, Boulder and Comparison Geographies, 2021 <br />Source: ACS 5-Year Data Tables, 2017-2021 <br />2.21 2.41 2.41 2.50 2.50 2.85 2.97 <br />Boulder Lafayette Boulder Louisville Longmont Superior Erie <br />County <br />Exhibit 14 shows the change in average household size from 2011 to 2021. Over the time period, <br />the average household size remained relatively stable in both Louisville and the County overall, <br />but the average household size in Louisville did increase by 2.9%. Of comparison cities, Boulder <br />City, Erie, and Superior experienced an increase in average household size, while Lafayette and <br />Longmont experienced a decrease. <br />Exhibit 14: Change in Average Household Size, Louisville and Comparison Geographies, 2011-2021 <br />Source: ACS 5-Year Data Tables, 2007-2011, 2017-2021 <br />Superior <br />2.71 <br />2.85 <br />5.2% <br />Louisville <br />2.43 <br />2.50 <br />2.9% <br />Boulder <br />2.17 <br />2.21 <br />1.8% <br />Boulder County <br />2.39 <br />2.41 <br />0.8% <br />Erie <br />2.95 <br />2.97 <br />0.7% <br />Longmont <br />2.59 <br />2.50 <br />-3.5% <br />Lafayette <br />2.50 <br />2.41 <br />-3.6% <br />Exhibit 15 shows the change in household size distribution from 2011 to 2021 for Louisville and <br />Boulder County. In both jurisdictions, the distribution is fairly evenly distributed and remained <br />relatively stable over the time period. In both areas, the most common household size is two - <br />member households (32% of Louisville households), followed by one -member households (27% <br />of Louisville households). <br />ECONorthwest 16 <br />23 <br />