View the most religious surnames in Ireland

Where Does The Last Name Colby Come From? ^{nationality or country of origin}

Colby (Arabic: كولبـي) is carried by more people in The United States than any other country/territory. It may also appear in the variant forms:. For other potential spellings of this surname click here.

How Common Is The Last Name Colby? ^{popularity and diffusion}

The last name Colby is the 30,652^nd most widely held family name in the world, borne by around 1 in 418,368 people. Colby is mostly found in The Americas, where 90 percent of Colby reside; 90 percent reside in North America and 89 percent reside in Anglo-North America. Colby is also the 38,039^th most common first name globally. It is borne by 19,835 people.

It is most widespread in The United States, where it is borne by 14,904 people, or 1 in 24,320. In The United States it is most common in: California, where 10 percent reside, Massachusetts, where 7 percent reside and New York, where 5 percent reside. Barring The United States it occurs in 63 countries. It is also found in England, where 5 percent reside and Canada, where 4 percent reside.

Colby Family Population Trend ^{historical fluctuation}

The occurrence of Colby has changed through the years. In The United States the number of people carrying the Colby last name grew 281 percent between 1880 and 2014; in England it grew 146 percent between 1881 and 2014; in Ireland it grew 178 percent between 1901 and 2014; in Scotland it grew 167 percent between 1881 and 2014 and in Wales it declined 44 percent between 1881 and 2014.

Colby Last Name Statistics ^demography

The religious adherence of those carrying the Colby surname is chiefly Anglican (86%) in Ireland.

In The United States Colby are 6.92% more likely to be registered Republicans than The US average, with 53.69% registered with the party.

The amount Colby earn in different countries varies somewhat. In South Africa they earn 3.43% more than the national average, earning R 245,796 per year; in United States they earn 7.37% more than the national average, earning $46,329 USD per year and in Canada they earn 13.17% more than the national average, earning $56,224 CAD per year.