CFGRID Dropping Leading "0"

Using CFGRID, Format="HTML" and a bind to a cfc. The query returns zip_code properly from a varchar(15) column. I can display the results of the query in a simple table properly, so the zip code for, say, Amherst Massachusetts shows as "01002". However, the cfgridcolumn shows it as "1002".

<cfform name="GridForm">
<cfgrid name = "RestaurantGrid"
format = "HTML"
height = "320"
width = "570"
bind="cfc:inc.cfc.restaurant.getRestaurants({cfgridpage},{cfgridpagesize},{cfgridsortcolumn},{cfgridsortdirection},'#sSid_Code#','#sRegion_Name#', '#sState_Code#' , '#sSearch_Name#')"
pagesize = "13"
sort = "Yes"
bgColor = "###sGridbgcolor#"
stripeRowColor = "###sGridstripeRowColor#"
stripeRows = "yes"
selectColor = "###sGridselectColor#"
selectMode = "row"
href = "oo.cfm"
hrefkey = "cnct_code"
appendKey = "Yes"
>
<cfgridcolumn name = "zip_code" header = "Zip" width = "100" dataalign = "left" headeralign = "left" >
</cfgrid>
</cfform>


The CFC . . .


<cfcomponent name = "restaurants" output = "no" hint="restaurants grid">
<cffunction name = "getRestaurants" access = "remote">
<cfargument name = "page" required = "yes">
<cfargument name = "pageSize" required = "yes">
<cfargument name = "gridsortcolumn" required = "yes">
<cfargument name = "gridsortdirection" required = "yes">
<cfargument name = "sSid_Code" required = "yes">
<cfargument name = "sRegion_Name" required = "yes">
<cfargument name = "sState_code" required = "yes">
<cfargument name = "sSearch_Name" required = "yes">

<cfquery name = "GridOutput" datasource="#sSid_Code#">
select zip_code
from vStores
where 1 = 1
<cfif IsDefined("sRegion_Name") AND sRegion_Name NEQ "ALL"> and Region_Name = '#sRegion_Name#' </cfif>
<cfif IsDefined("sState_Code") AND sState_code NEQ "ALL"> and State_Code = '#sState_Code#' </cfif>
<cfif IsDefined("sSearch_Name") AND sSearch_Name NEQ "ALL">
and ( address1_desc like '%#sSearch_Name#%'
or city_name like '%#sSearch_Name#%'
or zip_code like '%#sSearch_Name#%'
or buspart_name like '%#sSearch_Name#%'
)
</cfif>
<cfif gridsortcolumn neq ''>
order by #gridsortcolumn# #gridsortdirection#
<cfelse>
order by buspart_name
</cfif>
</cfquery>

<cfreturn queryconvertforgrid(GridOutput,page,pagesize)/>
</cffunction>
</cfcomponent>



Thanks.