diff --git a/R/addGeoRaster.R b/R/addGeoRaster.R
index 2c4001e..a5b5969 100644
--- a/R/addGeoRaster.R
+++ b/R/addGeoRaster.R
@@ -441,7 +441,8 @@ imagequeryOptions <- function(className = "info legend",
                               type = c("mousemove", "click"),
                               digits = NULL,
                               prefix = "Layer",
-                              noData = "NoData Value") {
+                              noData = "NoData Value",
+                              suffix = "") {
   type = match.arg(type)
   position <- match.arg(position)
   list(
@@ -450,7 +451,8 @@ imagequeryOptions <- function(className = "info legend",
     type = type,
     digits = digits,
     prefix = prefix,
-    noData = noData
+    noData = noData,
+    suffix = suffix
   )
 }
 
diff --git a/R/imagequery.R b/R/imagequery.R
index b0a1acd..d104e25 100644
--- a/R/imagequery.R
+++ b/R/imagequery.R
@@ -27,6 +27,7 @@
 #' @param prefix a character string to be shown as prefix for the layerId.
 #' @param className a character string to append to the control legend.
 #' @param ... currently not used.
+#' @param suffix a character string to be shown as suffix for the layerId values.
 #'
 #' @return
 #' A leaflet map object.
@@ -63,7 +64,8 @@ addImageQuery = function(map,
                          position = 'topright',
                          prefix = 'Layer',
                          className = "",
-                         ...) {
+                         ...,
+                         suffix = "") {
 
   if (inherits(map, "mapview")) map = mapview2leaflet(map)
 
@@ -157,6 +159,7 @@ addImageQuery = function(map,
     , type
     , digits
     , prefix
+    , suffix
   )
 }
 
diff --git a/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js b/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
index 81d91e3..e02524d 100644
--- a/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
+++ b/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
@@ -20,7 +20,7 @@ function mouseHandler(map, georaster, layerId, group, eventName, options) {
         val[0] = options.noData
       }
       if (query) {
-        outputWidget.innerHTML = renderInfo(val, layerId, options.digits, options.prefix);
+        outputWidget.innerHTML = renderInfo(val, layerId, options.digits, options.prefix, options.suffix);
       }
       let eventInfo = $.extend({
         id: layerId,
@@ -43,13 +43,13 @@ function mouseHandler(map, georaster, layerId, group, eventName, options) {
     }
   };
 }
-function renderInfo(val, layerId, digits, prefix) {
+function renderInfo(val, layerId, digits, prefix, suffix) {
   $(document.getElementById("rasterValues-" + layerId)).show();
   let text = "";
   if(digits === "null" || digits === null) {
-    text = "<small>"+ prefix+ " <strong>"+ layerId + ": </strong>"+ val + "</small>";
+    text = "<small>"+ prefix+ " <strong>"+ layerId + ": </strong>"+ val + (suffix.startsWith(" ") ? suffix : " " + suffix) + "</small>";
   } else {
-    text = "<small>"+ prefix+ " <strong>"+ layerId + ": </strong>"+ val[0].toFixed(digits)+ "</small>";
+    text = "<small>"+ prefix+ " <strong>"+ layerId + ": </strong>"+ val[0].toFixed(digits) + (suffix.startsWith(" ") ? suffix : " " + suffix) + "</small>";
   }
   return text;
 }
diff --git a/inst/htmlwidgets/lib/joda/addImageQuery-bindings.js b/inst/htmlwidgets/lib/joda/addImageQuery-bindings.js
index 44dd3c0..d842926 100644
--- a/inst/htmlwidgets/lib/joda/addImageQuery-bindings.js
+++ b/inst/htmlwidgets/lib/joda/addImageQuery-bindings.js
@@ -1,5 +1,5 @@
 /* global LeafletWidget, $, L */
-LeafletWidget.methods.addImageQuery = function(layerId, bounds, type, digits, prefix) {
+LeafletWidget.methods.addImageQuery = function(layerId, bounds, type, digits, prefix, suffix) {
   (function(){
     var map = this;
 
@@ -29,7 +29,7 @@ LeafletWidget.methods.addImageQuery = function(layerId, bounds, type, digits, pr
       if (!(map.layerManager.getVisibleGroups().includes(layerId))) {
         visible = false;
       }
-      rasterPicker.pick(e, layerId, boundsarr, digits, prefix, visible);
+      rasterPicker.pick(e, layerId, boundsarr, digits, prefix, suffix, visible);
     });
   }).call(this);
 };
diff --git a/inst/htmlwidgets/lib/joda/joda.js b/inst/htmlwidgets/lib/joda/joda.js
index e197d9f..cb300f0 100644
--- a/inst/htmlwidgets/lib/joda/joda.js
+++ b/inst/htmlwidgets/lib/joda/joda.js
@@ -28,7 +28,7 @@ rasterPicker.old = function(e, x, data) {
     }
 };
 
-rasterPicker.pick = function(event, layerId, bounds, digits, prefix, visible) {
+rasterPicker.pick = function(event, layerId, bounds, digits, prefix, suffix, visible) {
   var outputWidget = this.getInfoLegend(layerId);
   if (!visible) {
     $(outputWidget).hide();
@@ -49,7 +49,7 @@ rasterPicker.pick = function(event, layerId, bounds, digits, prefix, visible) {
     pickedLayerData[rasterHitInfo.layerId] = this.getLayerData(rasterHitInfo, event.latlng /*, event.zoom?*/);
   }
   // render collected hit values
-  outputWidget.innerHTML = this.renderInfo(pickedLayerData, digits, prefix);
+  outputWidget.innerHTML = this.renderInfo(pickedLayerData, digits, prefix, suffix);
 };
 
 rasterPicker.getInfoLegend = function(layerId) {
@@ -116,7 +116,7 @@ rasterPicker.getLayerData = function(rasterHitInfo, latlng, zoom) {
   return layerData;
 };
 
-rasterPicker.renderInfo = function(pickedLayerData, digits, prefix) {
+rasterPicker.renderInfo = function(pickedLayerData, digits, prefix, suffix) {
   var text = "";
   for (var layer_key in pickedLayerData) {
     var layer = pickedLayerData[layer_key];
@@ -126,9 +126,9 @@ rasterPicker.renderInfo = function(pickedLayerData, digits, prefix) {
       $(document.getElementById("imageValues" + "-" + layer_key)).show();
     }
     if(digits === "null" || digits === null) {
-      text += "<small>"+ prefix+ " <strong>"+ layer.layerId + ": </strong>"+ layer.value+ "</small>";
+      text += "<small>"+ prefix+ " <strong>"+ layer.layerId + ": </strong>"+ layer.value+ (suffix.startsWith(" ") ? suffix : " " + suffix) + "</small>";
     } else {
-      text += "<small>"+ prefix+ " <strong>"+ layer.layerId + ": </strong>"+ layer.value.toFixed(digits)+ "</small>";
+      text += "<small>"+ prefix+ " <strong>"+ layer.layerId + ": </strong>"+ layer.value.toFixed(digits)+ (suffix.startsWith(" ") ? suffix : " " + suffix) + "</small>";
     }
   }
   return text;
diff --git a/man/addImageQuery.Rd b/man/addImageQuery.Rd
index 53c7b12..564e5a2 100644
--- a/man/addImageQuery.Rd
+++ b/man/addImageQuery.Rd
@@ -16,7 +16,8 @@ addImageQuery(
   position = "topright",
   prefix = "Layer",
   className = "",
-  ...
+  ...,
+  suffix = ""
 )
 }
 \arguments{
@@ -48,6 +49,8 @@ to 'mousemove'.}
 \item{className}{a character string to append to the control legend.}
 
 \item{...}{currently not used.}
+
+\item{suffix}{a character string to be shown as suffix for the layerId values.}
 }
 \value{
 A leaflet map object.
diff --git a/man/imagequeryOptions.Rd b/man/imagequeryOptions.Rd
index 1c64e06..9df1049 100644
--- a/man/imagequeryOptions.Rd
+++ b/man/imagequeryOptions.Rd
@@ -10,7 +10,8 @@ imagequeryOptions(
   type = c("mousemove", "click"),
   digits = NULL,
   prefix = "Layer",
-  noData = "NoData Value"
+  noData = "NoData Value",
+  suffix = ""
 )
 }
 \arguments{
@@ -28,6 +29,8 @@ to 'mousemove'.}
 \item{noData}{the text shown when the mouse is over a \verb{NoData Value} as
 identified by GDAL. The default "NoData Value" will show whatever is defined by
 the Geotiff metadata.}
+
+\item{suffix}{a character string to be shown as suffix for the layerId values.}
 }
 \description{
 Imagequery options for addGeoRaster, addGeotiff and addCOG