Quick and dirty FIPS code lookup by state and county using Scala

FipsCode.scala

import java.net.URI
import io.Source

object FipsCode {
  def forStateAndCounty(state: String, county: String): Option[String] =
    fipsCodeLookup.get((state, county))

  lazy val fipsCodeLookup = {
    val url = ((URI create "http://www.census.gov/geo/www/ansi/national.txt") toURL)
    ((for (line <- Source.fromInputStream(url.openStream()).getLines();
         Array(state, _, countyCode, countyName, _) = line.split(","))
    yield ((state, countyName) -> countyCode)) toMap)
  }
}

Site endpoint deprecated. Files can be found here: https://geonames.usgs.gov/domestic/download_data.htm