The DUFFY surname in the USA

Frequency Comparisons
	Total	Rank	Frequency %	Per million people
United States
United States (Current snapshot)	37,962	827	0.014	141
United States (1880 census)	13,012	452	0.026	260
Change since 1880	+24950	-375	-0.012	-119
Other Countries
Australia	3,278	462	0.02	201
United Kingdom	18,852	293	0.041	410

Top States for DUFFY by Total
State	Total	Rank in State	Frequency %	Per million people
New York	3,878	379	0.020	204
Pennsylvania	3,235	321	0.026	263
California	2,900	1082	0.009	86
Massachusetts	2,668	249	0.042	420
New Jersey	2,644	247	0.031	314
Top States for DUFFY by Frequency
State	Total	Rank in State	Frequency %	Per million people
Massachusetts	2,668	249	0.042	420
Rhode Island	410	237	0.039	391
New Hampshire	473	336	0.038	383
Vermont	228	356	0.037	374
Delaware	277	417	0.035	353

Notes

Total is the total number of people with that surname.
Rank is the position in the list of names ordered by total (eg, a rank of 1 means that it's the most common name, and a rank of 10 means it's the tenth most common, etc).
Frequency is the percentage of people with that surname.
Per million people is the number of people with that surname per million of the population.

'A figure of zero indicates that we don't have data for this name (usually because it's quite uncommon and our stats don't go down that far). It doesn't mean that there's no-one with that name at all!

For less common surnames, the figures get progressively less reliable the fewer holders of that name there are. This data is aggregated from several public lists, and some stats are interpolated from known values. The margin of error is well over 100% at the rarest end of the table!

For less common surnames, the frequency and "per million" values may be 0 even though there are people with that name. That's because they represent less than one in a million of the population, which ends up as 0 after rounding.

It's possible for a surname to gain in rank and/or total while being less common per million people (or vice versa) as there are now more surnames in the USA as a result of immigration. In mathematical terms, the tail has got longer, with a far larger number of less common surnames.

Figures for top states show firstly the states where most people called DUFFY live. This obviously tends to be biased towards the most populous states. The second set of figures show where people called DUFFY represent the biggest proportion of the population. So, in this case, there are more people called DUFFY in New York than any other state, but you are more likely to find a DUFFY by picking someone at random in Massachusetts than anywhere else.

Classification and Origin of DUFFY

Region of origin: British Isles

Country of origin: Ireland

Language of origin: Gaelic

Ethnic origin: Celtic

Religious origin: Christian

Data for religion and/or language relates to the culture in which the DUFFY surname originated. It does not necessarily have any correlation with the language spoken, or religion practised, by the majority of current American citizens with that name.

Data for ethnic origin relates to the region and country in which the DUFFY surname originated. It does not necessarily have any correlation with the ethnicity of the majority of current American citizens with that name.

Ethnic distribution of DUFFY in the USA

Classification	Total	Percent
White (Hispanic)	569	1.5
Mixed Race	440	1.16
Asian/Pacific	235	0.62
Native American/Alaskan	178	0.47
White (Caucasian)	34,974	92.13
Black/African American	1,568	4.13

Ethnic distribution data shows the number and percentage of people with the DUFFY surname who reported their ethnic background as being in these broad categories in the most recent national census.

Similar names to DUFFY

The following names have similar spellings or pronunciations as DUFFY.

This does not necessarily imply a direct relationship between the names, but may indicate names that could be mistaken for this one when written down or misheard.