The HEFFERNAN surname in the USA

Frequency Comparisons
	Total	Rank	Frequency %	Per million people
United States
United States (Current snapshot)	6,532	4940	0.002	24
United States (1880 census)	772	6771	0.002	15
Change since 1880	+5760	+1831	0	+9
Other Countries
Australia	1,962	828	0.012	120
United Kingdom	1,601	3548	0.003	35

Top States for HEFFERNAN by Total
State	Total	Rank in State	Frequency %	Per million people
New York	731	2498	0.004	39
Massachusetts	695	1234	0.011	109
California	513	5303	0.002	15
Illinois	460	2700	0.004	37
New Jersey	386	2330	0.005	46
Top States for HEFFERNAN by Frequency
State	Total	Rank in State	Frequency %	Per million people
Massachusetts	695	1234	0.011	109
Vermont	49	2055	0.008	80
Connecticut	264	1587	0.008	78
Rhode Island	76	2079	0.007	72
New Hampshire	78	2336	0.006	63

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

Classification and Origin of HEFFERNAN

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 HEFFERNAN 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 HEFFERNAN 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 HEFFERNAN in the USA

Classification	Total	Percent
White (Hispanic)	127	1.94
Mixed Race	68	1.04
Asian/Pacific	59	0.9
Black/African American	17	0.26
Native American/Alaskan	13	0.2
White (Caucasian)	6,248	95.65

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

Similar names to HEFFERNAN

The following names have similar spellings or pronunciations as HEFFERNAN.

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.