There are many good points already listed, but let's also not forget that the organized groups we don't have don't tithe the shit out of a flock of unquestioning servants amassing wealth in the hundreds of billions of dollars and need ways to justify ourselves as a tax-free entity.

"There's none so blind as those who will not see" John Heywood.

Sometimes we do form groups to help out but mostly keep it local and keep it quiet. The only time I've seen an atheist/agnostic group publicize a charitable activity was when one group ''adopted'' a local freeway and has a sign. I'm just delighted whenever I pass it. Surely you're not implying that we're less empathetic and helpful than theists? If so...I want to see your data. Otherwise, I'd hate to think you've come here to start a ruckus.

Well, since there are no church of agnostic or a church of atheism, we could safely say that perhaps some of those could be first responders.
I for one, help without being noticed, nor do I want to be, I don't need a reward or recognition for being human and doing the right thing.

Another reason might be that agnostic groups do not have backing or money to reach out to anyone. This is because they are not pushing a belief system or an agenda.

Sometimes it takes actually looking to see something. True the religious people make all kinds of noise about 'their' helping. It's more about bringing attention to them and their 'good' deeds. Most non religious groups are about actually helping without so much advertisement.

Really? Here we have plenty of non denominational NGOs that give help to people. Most Governments don’t require a religious bent to work for them and they generally do some good work. None of the charities that i support are religious.

First, [telegraph.co.uk]
There are no groups, but nonbelievers cooperate at a greater level than religions.

I call it Survival of the Fittest but Trump calls it Thinning the Herd or Herd Immunity. Basically the idiot Xstian we save today will likely try to burn an Atheist at the stake tomorrow and we can't have that now, can we.

Not all areas of the country have hurricanes. The list of experienced and supported aid organizations are already in place. We don't have the money or the trust of churches.

Because they don't brag about it.
Also atheist 'groups' are usually not geographic bound.
The Thinking Atheist has raised $$$ for aid and so has the Atheist Experience out of Austin.
These were not necessarily for hurricane relief however.

Too few of us and too widely spread out across the country. We are not centrally located and organized.

Because more money going to "overhead" would be better used sending to existing orgs.

I think it is about the size of the groups. Large religious organizations caan organize and fund such endeavors. Agnostic and atheist groups are small and scattered, because iot is hard to forn a group out of a center of disbelief.

Aldo many agnostics and atheists might work for groups, such as The Red Cross, which is nto denominational. Just because the responding groups dont' have agnostic or atheist in the name (atheists don't need to advertise their efforts to gain membership), doesn't mean agnostics and atheists don't respond.

Are you on the scene?

Isn't it much harder to coordinate voluteerism without brick-and-mortar infrastructure ?

Agnostic groups like whom?

. . . It's looks like christians care about people and non-christians could care less about it, I know that not the case but it clearly kinda looks like it

I never see churches doing anything for the community. They like the cameras but public service is just a way to stimulate donations.

Because Atheists and Agnostics don't tithe!