Magento: How to remove certain States from state/region list at Checkout or registration?

This can be easily achievable without removing from "directory_country_region" database table.

Just you need to follow below steps:

1. Override _getRegions($storeId) method of Mage_Directory_Helper_Data class.
2. Assign the Region Codes which you want to exclude into an array i.e $excludeRegions variable.
3. Add logic for skip above region codes from available list

So the final code looks like as below:

    $excludeRegions = array('AK','AS','AF','AA','AC','AE','AM','AP','DC','FM','GU','HI','MH','MP','PW','PR','VI');
    foreach ($collection as $region) {
        if (!$region->getRegionId()) {
            continue;
        }
        //BOF Custom Logic Here
        $regionCode = $region->getCode();
        if (in_array($regionCode, $excludeRegions)) {
            continue;
        }
        //EOF Custom Logic Here
        $regions[$region->getCountryId()][$region->getRegionId()] = array(
            'code' => $region->getCode(),
            'name' => $this->__($region->getName())
        );
    }

Hoping this will help to someone.

Thanks,

Magento 1.9.2
Step 1: Copy file from: app/code/core/Mage/Directory/Helper/Data.php
to: app/code/local/Mage/Directory/Helper/Data.php

Step 2: Override _getRegions($storeId) method of Mage_Directory_Helper_Data class.

• Look at the line number 184: protect function _getRegions($storeID)
• Add this code after the end of the $regions on line 200
  

  $excludeRegions = array('AS','AF','AA','AC','AE','AM','AP','DC','FM','GU','MH','MP','PW','PR','VI'); foreach ($collection as $region) { if (!$region->getRegionId()) { continue; }

Step 3: Assign the Region Codes which you want to remove to an array i.e. $excludeRegions variable.

• Add this codes after step 2.

  //BOF Custom Logic Here $regionCode = $region->getCode(); if (in_array($regionCode, $excludeRegions)) { continue; }

Step 4: Assign the Region Codes which you want to remove to an array i.e. $excludeRegions variable.

Below is the final code:

==========================================================================

protected function _getRegions($storeId)
{
    $countryIds = array();

    $countryCollection = $this->getCountryCollection()->loadByStore($storeId);
    foreach ($countryCollection as $country) {
        $countryIds[] = $country->getCountryId();
    }

    /** @var $regionModel Mage_Directory_Model_Region */
    $regionModel = $this->_factory->getModel('directory/region');
    /** @var $collection Mage_Directory_Model_Resource_Region_Collection */
    $collection = $regionModel->getResourceCollection()
        ->addCountryFilter($countryIds)
        ->load();

    $regions = array(
        'config' => array(
            'show_all_regions' => $this->getShowNonRequiredState(),
            'regions_required' => $this->getCountriesWithStatesRequired()
        )
    );

    $excludeRegions = array('AS','AF','AA','AC','AE','AM','AP','DC','FM','GU','MH','MP','PW','PR','VI');
    foreach ($collection as $region) {
        if (!$region->getRegionId()) {
            continue;
        }

    //BOF Custom Logic Here
    $regionCode = $region->getCode();
    if (in_array($regionCode, $excludeRegions)) {
        continue;
    }

    //EOF Custom Logic here
    $regions[$region->getCountryId()][$region->getRegionId()] = array(
            'code' => $region->getCode(),
            'name' => $this->__($region->getName())
        );
    }
    return $regions;
}

Step 5: Log in to your Magento admin and clear all cache.

Hope this help!