The challenge to this issue is that the word "Zionist" means different things to different people and to different Jews. This is an answer given elsewhere. As the writer probably know more about this than all of us put together I thought it might help.
No, not all Jews are Zionists. However, the majority, globally, probably are.
But, and this is the important part, what “Zionist” means differs to different people. I am a Zionist, but some Zionists would probably say that my Zionism isn’t “real” Zionism, because “Zionism” is sort of an umbrella term describing many different types of ideologies:
1. *Religious Zionism*: that "Eretz Yisrael" (the Land of Israel) was promised to the ancient Israelites by God, and Jews have a permanent and unchangeable right to the land.
2. Secular or Political Zionism (itself an umbrella term): the idea, born from 19th century European and Arabist nationalism ideologies, that the Jews, being a nation, should have a physical nation in which to live free of persecution, like all other peoples should.
3 *Labour Zionism*: the idea that a Jewish state should be created through the efforts of the Jewish working class settling in the Land of Israel and constructing a state through the creation of a progressive Jewish society. Today, this ideology is less popular in Israel, but still remains a strong current. Usually progressive Zionists are secular, but not always. Many are religious Jews in some sense.
4. *Right-wing Zionism*: this ideology that Labour or left-wing or Progressive Zionism is not nationalist enough, and that it is impossible for Jews and Arabs to coexist. It’s often also explicitly expansionist, with right-wing Zionists often proponents of annexing the West Bank or retaking the Gaza Strip. Right-wing Zionists may or may not also be religious.
These are named ideologies, but the reality is that real life is more fluid and more complicated. Some Jews (like myself) believe in the inalienable right of the Jewish People to live in our ancestral homeland, and our right to settle there, but also believe in the peace process, and think that our rights as Jews should never come at the expense of the rights of Palestinians (and other non-Jews in Israel or the occupied territories). Some Jews’ Zionism is influenced by religion, and for some, it isn’t.
Some Jews think that “Zionism” is a thing of the past, a foregone conclusion- now that the state of Israel exists, debating Zionism is a moot point- what matters is what we do with the state we have. Some of these people identify themselves and their thinking as post-Zionist.
And of course, there is a not-insignificant contingent of Jews who identify themselves as anti-Zionist. But numerically, they are a minority among the global Jewish community. And often, their group memberships are made up largely of non-Jews (for example, Jewish Voice for Peace).
Anyway, there’s a wide diversity of opinion among Jews about what Zionism means and about whether it’s a good thing or not. We’re not a hivemind.
Ilana Newman, BA Jewish Studies www.quora.com/Are-all-the-Jews-Zionists?redirected_qid+37745181