If you're an academic aiming to reach a broad international audience, it is increasingly the case that you must publish in English. Philosophy is no exception. This trend gives native English speakers an academic advantage: They can more easily reach a broad international audience without having to write in a foreign language.
A related question is the extent to which people who make their academic home in Anglophone countries control the English-language journals in which so much of our scholarly communication takes place. One could imagine the situation either way: Maybe the most influential academic journals in English are almost exclusively housed in Anglophone countries and have editorial boards almost exclusively composed of people in those same countries; or maybe English-language journals are a much more international affair, led by scholars from a diverse range of countries.
To examine this question, I looked at the editorial boards of the top 15 ranked journals in Brian Leiter's 2013 poll of "top philosophy journals without regard to area". I noted the primary institution of every board member. (For methodological notes see the supplement at the end.)
In all, 564 editorial board members were included in the analysis. Of these, 540 (96%) had their primary academic affiliation with an institution in an Anglophone country. Only 4% of editorial board members had their primary academic affiliation in a non-Anglophone country.
The following Anglophone countries were represented:
USA: 377 philosophers (67% of total) UK: 119 (21%) Australia: 26 (5%) Canada: 13 (2%) New Zealand: 5 (1%)
The following non-Anglophone countries were represented:
Germany: 6 (1%) Sweden: 5 (1%) Netherlands: 3 (1%) China (incl. Hong Kong): 2 (<1%) France: 2 (<1%) Belgium: 1 (<1%) Denmark: 1 (<1%) Finland: 1 (<1%) Israel: 1 (<1%) Singapore: 1 (<1%) [N.B.: English is one of four official languages] Spain: 1 (<1%)
Worth noting: Synthese showed much more international participation than any of the other journals, with 13/31 (42%) of its editorial board from non-Anglophone countries.
It seems to me that if English is to continue in its role as the de facto lingua franca of philosophy (ironic foreign-language use intended!), then the editorial boards of the most influential journals ought to reflect substantially more international participation than this.
The 15 journals were Philosophical Review, Journal of Philosophy, Nous, Mind, Philosophy & Phenomenological Research, Ethics, Philosophical Studies, Australasian Journal of Philosophy, Philosopher's Imprint, Analysis, Philosophical Quarterly, Philosophy & Public Affairs, Philosophy of Science, British Journal for the Philosophy of Science, and Synthese. Some of these journals are "in house" or have a regional focus in their editorial boards. I did not exclude them on those grounds. It is relevant to the situation that the two top-ranked journals on this list are edited by the faculty at Cornell and Columbia respectively.
I excluded editorial assistants and managers without without full-time permanent academic appointments (which are typically grad students or publishing or secretarial staff). I included editorial board members, managers, consultants, and staff with full-time permanent academic appointments, including emeritus.
I used the institutional affiliation listed at the journal's "editorial board" website when that was available (even in a few cases where I knew the information to be no longer current), otherwise I used personal knowledge or a web search. In each case, I tried to determine the individual's primary institutional affiliation or most recent primary affiliation for emeritus professors. In a few cases where two institutions were about equally primary, I used the first-listed institution either on the journal's page or on a biographical or academic source page that ranked highly in a Google search for the philosopher.
I am sure I have made some mistakes! I've made the raw data available here. I welcome corrections. However, I will only make corrections in accord with the method above. For example, it is not part of my method to update inaccurate affiliations on the journals' websites. Trying to do so would be unsystematic, disproportionately influenced by blog readers and people in my social circle.
A few mistakes are inevitable in projects of this sort and shouldn't have a large impact on the general findings.