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| | The Gasconade River, which forms part of the county's northwestern border, is its most important waterway and drains its western and central portions. The Meramec and its tributary, the Bourbeuse River, drain the easternmost section. | | The Gasconade River, which forms part of the county's northwestern border, is its most important waterway and drains its western and central portions. The Meramec and its tributary, the Bourbeuse River, drain the easternmost section. |
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| − | The most important highways in the county are Interstate 44, which runs through its center in a generally southwest-to-northeast direction and connects the cities of Doolittle, Rolla, and St. James; and U.S. Route 63, which runs north to south through Rolla and Edgar Springs. Portions of the now-decommissioned U.S. 66, which I-44 replaced, still exist alongside the interstate. Other major routes include Missouri State Highway 8, which has its western terminus at St. James; State Highway 68, which passes through St. James and the easternmost part of the county; and State Highway 72, which runs southeast from its western terminus at Rolla. | + | The most important highways in the county are Interstate 44, which runs through its center in a generally southwest-to-northeast direction and connects the cities of Doolittle, Rolla, and St. James; and U.S. Route 63, which runs north to south through Rolla and Edgar Springs. Portions of the now-decommissioned U.S. 66, which I-44 replaced, still exist alongside the interstate. Other major routes include Missouri State Highway 8, which has its western terminus at St. James; State Highway 68, which passes through St. James and the easternmost part of the county; and State Highway 72, which runs southeast from its western terminus at Rolla. |
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| | + | ==Demographics== |
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| | + | At the 2010 census, Phelps County had a total population of 45,156, with 17,564 households and 10,953 families; this represented a significant increase from its 2000 population of 39,825. The population density was 67.0 per square mile. There were 19,533 housing units, or about 29.0 per square mile. The racial makeup of the county was about 91.70% White, 2.23% African-American, 0.56% Native American, 2.91% Asian, 0.07% Native Hawaiian or Pacific Islander, 0.37% from some other race, and 2.15% from two or more races. Hispanics of any race were 2.04% of the population.<ref>https://mcdc.missouri.edu/applications/census2010/report.php?g=05000US29161|04000US29</ref> |
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| | + | The median age in the county was about 33 years. 21.68% of the population was under the age of 18, 17.23% was between the ages of 18 and 24, 22.89% was between the ages of 25 and 44, 24.56% was between the ages of 45 and 64, and 13.63% was 65 years old or older. The sex ratio was 52.3% male, 47.7% female.<ref>http://censusviewer.com/county/MO/Phelps</ref> |
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| | + | As of 2018, the median household income in the county was $42,846, and the median family income was $59,438. Males had a median income of $44,693 versus $32,073 for females. The unemployment rate was 6.1%. The per capita income was $24,304. About 22.3% of the population was below the poverty line, including 23.6% of those under the age of 18 and 10.5% of those 65 years old or older.<ref>https://data.census.gov/cedsci/table?g=0400000US29_0500000US29161&d=ACS%205-Year%20Estimates%20Data%20Profiles&tid=ACSDP5Y2018.DP03</ref> |
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| | ==Communities== | | ==Communities== |