Outlined below is a zip code list for Portland. Select a zip code you are interested in to find zip code data on demographics, family, housing, education, transportation, and real estate. See the Portland Zip Code Map.
For other uses, see Volt (disambiguation). The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
The speed of light in vacuum is usually denoted by a lowercase c, for constant or the Latin celeritas (meaning swiftness, celerity). Historically, the symbol V was used as an alternative symbol for the speed of light, introduced by James Clerk Maxwell in 1865.